Switch telemetry library loading to plain require_once (#5891)

Co-authored-by: Volodymyr Kolesnykov <[email protected]>
Co-authored-by: Rinat K <[email protected]>

000-vip-init.php

@@ -234,32 +234,15 @@
 require_once __DIR__ . '/vip-helpers/class-wpcomvip-restrictions.php';
 
 // Load the Telemetry files
-// TODO: switch to plain require_once like the above once the telemetry is fully deployed (all files are present)
-$require_telemetry_files = [
-	__DIR__ . '/telemetry/class-telemetry-system.php',
-	__DIR__ . '/telemetry/class-tracks.php',
-	__DIR__ . '/telemetry/class-telemetry-client.php',
-	__DIR__ . '/telemetry/class-telemetry-event-queue.php',
-	__DIR__ . '/telemetry/class-telemetry-event.php',
-	__DIR__ . '/telemetry/tracks/class-tracks-event-dto.php',
-	__DIR__ . '/telemetry/tracks/class-tracks-event.php',
-	__DIR__ . '/telemetry/tracks/class-tracks-client.php',
-	__DIR__ . '/telemetry/tracks/tracks-utils.php',
-];
-
-// If there is a missing file, the loop will break and the telemetry files will not be loaded at all
-do {
-	foreach ( $require_telemetry_files as $file ) {
-		if ( ! file_exists( $file ) ) {
-			break 2;
-		}
-	}
-	foreach ( $require_telemetry_files as $file ) {
-			require_once $file;
-	}
-} while ( false );
-
-unset( $require_telemetry_files );
+require_once __DIR__ . '/telemetry/class-telemetry-system.php';
+require_once __DIR__ . '/telemetry/class-tracks.php';
+require_once __DIR__ . '/telemetry/class-telemetry-client.php';
+require_once __DIR__ . '/telemetry/class-telemetry-event-queue.php';
+require_once __DIR__ . '/telemetry/class-telemetry-event.php';
+require_once __DIR__ . '/telemetry/tracks/class-tracks-event-dto.php';
+require_once __DIR__ . '/telemetry/tracks/class-tracks-event.php';
+require_once __DIR__ . '/telemetry/tracks/class-tracks-client.php';
+require_once __DIR__ . '/telemetry/tracks/tracks-utils.php';
 
 add_action( 'init', [ WPComVIP_Restrictions::class, 'instance' ] );