gen_stub: remove unused VariableLike::getVariableTypeCode()

Author: DanielEScherzer

build/gen_stub.php

@@ -2385,8 +2385,6 @@ public function __construct(
         $this->exposedDocComment = $exposedDocComment;
     }
 
-    abstract protected function getVariableTypeCode(): string;
-
     abstract protected function getVariableTypeName(): string;
 
     abstract protected function getFieldSynopsisDefaultLinkend(): string;
@@ -2601,11 +2599,6 @@ protected function getVariableTypeName(): string
         return "constant";
     }
 
-    protected function getVariableTypeCode(): string
-    {
-        return "const";
-    }
-
     protected function getFieldSynopsisDefaultLinkend(): string
     {
         $className = str_replace(["\\", "_"], ["-", "-"], $this->name->class->toLowerString());
@@ -3038,11 +3031,6 @@ public function __construct(
         parent::__construct($flags, $type, $phpDocType, $link, $phpVersionIdMinimumCompatibility, $attributes, $exposedDocComment);
     }
 
-    protected function getVariableTypeCode(): string
-    {
-        return "property";
-    }
-
     protected function getVariableTypeName(): string
     {
         return "property";