Remove the gmap_geocode variable, it doesn't do anything anymore.

gmap_location.install

@@ -145,3 +145,13 @@ function gmap_location_update_5100() {
 
   return $ret;
 }
+
+/**
+ * 5.x-1.0 update 2. (Post-release)
+ * Delete unneeded variable.
+ */
+function gmap_location_update_5101() {
+  $ret = array();
+  variable_del('gmap_geocode');
+  return $ret;
+}

gmap_location.module

@@ -382,17 +382,6 @@ function theme_gmap_location_node_page($count, $header, $map, $footer) {
  *
  */
 function gmap_location_admin_settings() {
-  $form['geocoding'] = array(
-    '#type' => 'fieldset',
-    '#title' => t('Geocode Locations'),
-  );
-  $form['geocoding']['gmap_geocode'] = array(
-    '#type' => 'radios',
-    '#title' => t('Enable the Google Map API geocoding'),
-    '#default_value' => variable_get('gmap_geocode', 1),
-    '#options' => array(1 => t('Enabled'), 0 => t('Disabled')),
-  );
-
   $form['user'] = array(
     '#type' => 'fieldset',
     '#title' => t('User settings'),