PHPCS 4.x | File::isReference(): simplify code

Commit 08824f3 added support for `T_USE` tokens for closures being parentheses owners.

As the `File::getMethodParameters()` method also supports closure `use` parameters already, the code in the `File::isReference()` method can now be simplified.

The existing unit tests already cover this.

Author: jrfnl

src/Files/File.php

@@ -1968,6 +1968,7 @@ public function isReference($stackPtr)
                 if ($owner['code'] === T_FUNCTION
                     || $owner['code'] === T_CLOSURE
                     || $owner['code'] === T_FN
+                    || $owner['code'] === T_USE
                 ) {
                     $params = $this->getMethodParameters($this->tokens[$lastBracket]['parenthesis_owner']);
                     foreach ($params as $param) {
@@ -1977,19 +1978,6 @@ public function isReference($stackPtr)
                         }
                     }
                 }//end if
-            } else {
-                $prev = false;
-                for ($t = ($this->tokens[$lastBracket]['parenthesis_opener'] - 1); $t >= 0; $t--) {
-                    if ($this->tokens[$t]['code'] !== T_WHITESPACE) {
-                        $prev = $t;
-                        break;
-                    }
-                }
-
-                if ($prev !== false && $this->tokens[$prev]['code'] === T_USE) {
-                    // Closure use by reference.
-                    return true;
-                }
             }//end if
         }//end if