Remove superfluous version restriction

Author: sebastianbergmann

tests/unit/Framework/MockObject/MockObjectTest.php

@@ -1101,9 +1101,6 @@ public function testVoidReturnTypeIsMockedCorrectly(): void
         $this->assertNull($stub->methodWithVoidReturnTypeDeclaration());
     }
 
-    /**
-     * @requires PHP 7.2
-     */
     public function testObjectReturnTypeIsMockedCorrectly(): void
     {
         /** @var ClassWithAllPossibleReturnTypes|MockObject $stub */

tests/unit/Framework/TestCaseTest.php

@@ -852,9 +852,6 @@ public function testCurrentWorkingDirectoryIsRestored(): void
         $this->assertSame($expectedCwd, getcwd());
     }
 
-    /**
-     * @requires PHP 7
-     */
     public function testTypeErrorCanBeExpected(): void
     {
         $o = new ClassWithScalarTypeDeclarations;