Revert "Silence completely harmless phpmd warnings"

This reverts commit 240bbb7.

Holy molly. phpcs is now complaining about invalid docblock tags when
it reads the phpmd warning suppresion tags. It seems you cannot keep
both happy at the same time. Oh well!

We'll disable the phpmd warning suppresion tags. At least phpmd simply
warns, but doesn't stop the builds.

classes/text_filter.php

@@ -111,8 +111,6 @@ public function filter_stage_pre_format(string $text, array $options): string {
      * @param string $text
      * @param array $options
      * @return string
-     *
-     * @SuppressWarnings(PHPMD.UnusedFormalParameter)
      */
     public function filter_stage_pre_clean(string $text, array $options): string {
         return $text;
@@ -124,8 +122,6 @@ public function filter_stage_pre_clean(string $text, array $options): string {
      * @param string $text
      * @param array $options
      * @return string
-     *
-     * @SuppressWarnings(PHPMD.UnusedFormalParameter)
      */
     public function filter_stage_post_clean(string $text, array $options): string {
         return $text;
@@ -153,8 +149,6 @@ public function filter_stage_string(string $text, array $options): string {
      * @param string $text The text to filter.
      * @param array $options The filter options.
      * @return string The filtered text for this multilang block.
-     *
-     * @SuppressWarnings(PHPMD.UnusedFormalParameter)
      */
     public function filter($text, array $options = []) {
 

tests/actual_test_cases.php

@@ -27,8 +27,6 @@
  * Returns the actual test cases for the unit tests.
  *
  * @return array of test cases
- *
- * @SuppressWarnings(PHPMD.ExcessiveMethodLength)
  */
 function multilang2_actual_test_cases(): array {
     return [