Removed PHP7 code

src/Fixer/Preload/ExplicitlyLoadClass.php

@@ -60,7 +60,11 @@ protected function applyFix(\SplFileInfo $file, Tokens $tokens)
 
     }
 
-    private function parse(Tokens $tokens, string $functionName): array
+    /**
+     * @var string $functionName
+     * @return string[] classes
+     */
+    private function parse(Tokens $tokens, $functionName)
     {
         $classes = [];
         $index = $this->findFunction($tokens, $functionName);
@@ -103,7 +107,7 @@ private function parse(Tokens $tokens, string $functionName): array
      *
      * @return string[]
      */
-    private function getPreloadedClasses(\SplFileInfo $file, Tokens $tokens): array
+    private function getPreloadedClasses(\SplFileInfo $file, Tokens $tokens)
     {
         $classes = [];
 
@@ -124,10 +128,13 @@ private function getPreloadedClasses(\SplFileInfo $file, Tokens $tokens): array
 
 
     /**
-     * Find a function in the tokens. Return the index or null.
-     * The index is to the "function" token.
+     * Find a function in the tokens.
+     *
+     * @param Tokens $tokens
+     * @param string $name
+     * @return int|null the index or null. The index is to the "function" token.
      */
-    private function findFunction(Tokens $tokens, string $name): ?int
+    private function findFunction(Tokens $tokens, $name)
     {
         foreach ($tokens as $index => $token) {
             if (!$token->isGivenKind(T_FUNCTION)) {
@@ -147,7 +154,7 @@ private function findFunction(Tokens $tokens, string $name): ?int
         return null;
     }
 
-    private function injectClasses(Tokens $tokens, array $classes): void
+    private function injectClasses(Tokens $tokens, array $classes)
     {
         $insertAfter = null;
         foreach ($tokens as $index => $token) {