replacing google fonts

I add these cods to functions.php, but none worked.

// Remove google fonts
         function remove_gfonts_action() {
          remove_action('wp_enqueue_scripts','tc_enqueue_gfonts');
         }
         add_action('init','remove_gfonts_action');

// Remove google fonts
         function remove_gfonts_action() {
          remove_action('wp_enqueue_scripts',array( $this , 'tc_enqueue_gfonts' ),0);
         }
         add_action('init','remove_gfonts_action');

Any idea how to do it? Thanks in advance!