[6.0] Remove leftover reCaptcha files (#44321)

Thanks testers and @Fedik for the work.

Author: Fedik

build/media_source/plg_captcha_recaptcha/js/recaptcha.es6.js

@@ -144,14 +144,11 @@ private function prepareProcessing($file, $phpcsFile, $line, $column, $error)
                 break;
 
             case 'Squiz.Classes.ValidClassName.NotCamelCaps':
-                if (
-                    strpos($file, 'localise') !== false
-                    || strpos($file, 'recaptcha_invisible') !== false
-                ) {
+                if (strpos($file, 'localise') !== false) {
                     $this->preProcessing[] = [
-                        'file' => $file,
-                        'line' => $line,
-                        'column' => $column,
+                        'file'    => $file,
+                        'line'    => $line,
+                        'column'  => $column,
                         'cleanup' => 'ValidClassNameNotCamelCaps',
                     ];
                 }