Remove unnecessary markers and restore one that shouldn't have been removed

Author: rodrigoprimo

tests/Core/Tokenizers/Tokenizer/RecurseScopeMapSwitchTokenScopeTest.inc

@@ -1,7 +1,7 @@
 <?php
 
 /* testSwitchNormalSyntax */
-switch ($value) /* testSwitchNormalSyntaxScopeOpener */ {
+switch ($value) {
     case 1:
         echo 'one';
         break;
@@ -13,7 +13,8 @@ switch ($value) /* testSwitchNormalSyntaxScopeOpener */ {
 
 // Test for https://github.com/squizlabs/PHP_CodeSniffer/issues/497
 /* testSwitchAlternativeSyntax */
-switch ($value) /* testSwitchAlternativeSyntaxScopeOpener */ :
+switch ($value) :
+    /* testSwitchAlternativeSyntaxEnsureTestWillNotPickUpWrongColon */
     case 1:
         echo 'one';
         break;

tests/Core/Tokenizers/Tokenizer/RecurseScopeMapSwitchTokenScopeTest.php

@@ -103,7 +103,7 @@ public static function dataSwitchScope()
                     'scope_opener' => T_OPEN_CURLY_BRACKET,
                     'scope_closer' => T_CLOSE_CURLY_BRACKET,
                 ],
-                'testOpenerMarker' => '/* testSwitchNormalSyntaxScopeOpener */',
+                'testOpenerMarker' => null,
                 'testCloserMarker' => '/* testSwitchNormalSyntaxScopeCloser */',
             ],
             'switch alternative syntax'                                          => [
@@ -112,7 +112,7 @@ public static function dataSwitchScope()
                     'scope_opener' => T_COLON,
                     'scope_closer' => T_ENDSWITCH,
                 ],
-                'testOpenerMarker' => '/* testSwitchAlternativeSyntaxScopeOpener */',
+                'testOpenerMarker' => null,
                 'testCloserMarker' => '/* testSwitchAlternativeSyntaxScopeCloser */',
             ],
             'switch with closure in the condition'                               => [