Removes categories "tech" from list and month views

remove-categories-not-replated.php

/*
 * The Events Calendar Remove Events from Month and List Views
 * add coding to theme's functions.php
 * @version 3.12
 * modify here with event category slugs: array( 'concert', 'convention' )
*/
add_action( 'pre_get_posts', 'tribe_exclude_events_category_month_list' );
function tribe_exclude_events_category_month_list( $query ) {

	if ( isset( $query->query_vars['eventDisplay'] ) && ! is_singular( 'tribe_events' ) ) {

		if ( $query->query_vars['eventDisplay'] == 'list' && ! is_tax( Tribe__Events__Main::TAXONOMY ) || $query->query_vars['eventDisplay'] == 'month' && $query->query_vars['post_type'] == Tribe__Events__Main::POSTTYPE && ! is_tax( Tribe__Events__Main::TAXONOMY ) && empty( $query->query_vars['suppress_filters'] ) ) {

			$query->set( 'tax_query', array(

				array(
					'taxonomy' => Tribe__Events__Main::TAXONOMY,
					'field'    => 'slug',
					'terms'    => array( 'concert', 'convention' ),
					'operator' => 'NOT IN'
				)
			) );
		}

	}

	return $query;
}

I've tried this but it doesn't work:
if ( $query->query_vars['eventDisplay'] == 'list' && ! is_tax( Tribe__Events__Main::TAXONOMY ) || $query->query_vars['eventDisplay'] == 'month' && ! $query->tribe_is_event_venue && ! $query->tribe_is_event_organizer && $query->query_vars['post_type'] == Tribe__Events__Main::POSTTYPE && ! is_tax( Tribe__Events__Main::TAXONOMY ) && empty( $query->query_vars['suppress_filters'] ) ) {

Does not work anymore unfortunately. Do you have an idea how to fix this code @jesseeproductions?

I have found the culprit:
https://gist.github.com/Zodiac1978/a67e882619169959d38ad9a722160b48#file-functions-php-L29-L34

@Zodiac1978 - Thanks for linking to a solution.