fix call_user_func warning

Warning: call_user_func_array() expects parameter 1 to be a valid
callback, class 'WC_Google_Analytics' does not have a method
'google_tracking_code' in /htdocs/wp-includes/plugin.php on line 405

tracking functions were inside of init_form_fields()

classes/integrations/google-analytics/class-wc-google-analytics.php

@@ -62,6 +62,8 @@ class WC_Google_Analytics extends WC_Integration {
 			)
 		);
 		
+    } // End init_form_fields()
+    
 	/**
 	 * Google Analytics standard tracking
 	 **/
@@ -191,8 +193,6 @@ class WC_Google_Analytics extends WC_Integration {
 		</script>
 		<?php
 	}
-    
-    } // End init_form_fields()
 }
 
 /**