Bug 1575559 - Remove unused impl_coord_copy. r=boris

Differential Revision: https://phabricator.services.mozilla.com/D42857

--HG--
extra : moz-landing-system : lando

servo/components/style/properties/gecko.mako.rs

@@ -321,18 +321,6 @@ impl ${style_struct.gecko_struct_name} {
     }
 </%def>
 
-<%def name="impl_coord_copy(ident, gecko_ffi_name)">
-    #[allow(non_snake_case)]
-    pub fn copy_${ident}_from(&mut self, other: &Self) {
-        self.gecko.${gecko_ffi_name}.copy_from(&other.gecko.${gecko_ffi_name});
-    }
-
-    #[allow(non_snake_case)]
-    pub fn reset_${ident}(&mut self, other: &Self) {
-        self.copy_${ident}_from(other)
-    }
-</%def>
-
 <%!
 def get_gecko_property(ffi_name, self_param = "self"):
     return "%s.gecko.%s" % (self_param, ffi_name)