[PHPUnit] Add RemoveDataProviderTestPrefixRector

[TomasVotruba]

Closes #2136

The Change

  <?php
  
  namespace App\Tests;
  
  class SomeClass extends \PHPUnit\Framework\TestCase
  {
      /**
-      * @dataProvider testProvideData()
+      * @dataProvider provideData()
       */
      public function test()
      {
          $nothing = 5;
      }
  
-     public function testProvideData()
+     public function provideData()
      {
          return ['123'];
      }
  }

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[TomasVotruba]

cc @DaveLiddament Feedback appreciated, this should be simple one 😉