Prashant/ga tag (#262)

* Update Google Analytics Tag.

* Updated google tag manager

* Removing GTM

Author: PrashantVaidyanathan

config/_default/params.toml

@@ -282,7 +282,7 @@ plugins_js  = []
 ############################
 [marketing]
   google_analytics = "G-FPMRGFWXN0"
-  google_tag_manager = "GT-5MX8GTC7"
+  google_tag_manager = ""
 
 ############################
 ## Content Management System