refactor: remove GoogleAnalytics from config.toml (moved to Params)

exampleSite/config/_default/config.toml

@@ -15,9 +15,6 @@ baseurl = "/"
 # To display a copyright symbol, type `©`. For current year, type `{year}`.
 copyright = ""
 
-# Enable analytics by entering your Google Analytics tracking ID
-googleAnalytics = ""
-
 ############################
 ## Advanced options below ##
 ############################