AC-9831: Block template render enhancement

	 * removed code as per BiC changes suggested by Binh/Dmytro

Author: rizwankhgl

app/code/Magento/Email/Model/Template/Filter.php

@@ -414,10 +414,6 @@ public function blockDirective($construction)
         $skipParams = ['class', 'id', 'output'];
         $blockParameters = $this->getParameters($construction[2]);
 
-        if (isset($blockParameters['cache_key'])) {
-            $blockParameters['cache_key'] = self::CACHE_KEY_PREFIX . $blockParameters['cache_key'];
-        }
-
         $block = null;
 
         if (isset($blockParameters['class'])) {

lib/internal/Magento/Framework/Filter/Template/Tokenizer/Parameter.php

@@ -25,7 +25,7 @@ public function tokenize()
             }
 
             if ($this->char() !== '=') {
-                 $parameterName .= $this->char() !== null ? strtolower($this->char()) : $this->char();
+                 $parameterName .= $this->char();
             } else {
                 $parameters[$parameterName] = $this->getValue();
                 $parameterName = '';