[cs] remove value-less docblocks

Author: TomasVotruba

src/DocBlock.php

@@ -73,9 +73,6 @@ public function getSummary(): string
         return $this->summary;
     }
 
-    /**
-     * @return DocBlock\Description
-     */
     public function getDescription(): DocBlock\Description
     {
         return $this->description;

src/DocBlock/Tags/Method.php

@@ -185,9 +185,6 @@ public function isStatic(): bool
         return $this->isStatic;
     }
 
-    /**
-     * @return Type
-     */
     public function getReturnType(): Type
     {
         return $this->returnType;