refactor: Remove G/Z Namespace support

This previously enabled things like `d g g` to work, but we can
fix that instead by not clearing out pending vim state on change.

Either way, it is unnecessary and causes some user-confusion
(zed-industries/community#176), so remove this code for now; and use
comments to organize the file a bit instead.

crates/vim/src/normal.rs

@@ -107,7 +107,7 @@ pub fn normal_motion(
             Some(Operator::Delete) => delete_motion(vim, motion, times, cx),
             Some(Operator::Yank) => yank_motion(vim, motion, times, cx),
             Some(operator) => {
-                // Can't do anything for text objects or namespace operators. Ignoring
+                // Can't do anything for text objects, Ignoring
                 error!("Unexpected normal mode motion operator: {:?}", operator)
             }
         }
@@ -441,11 +441,8 @@ mod test {
     use indoc::indoc;
 
     use crate::{
-        state::{
-            Mode::{self, *},
-            Namespace, Operator,
-        },
-        test::{ExemptionFeatures, NeovimBackedTestContext, VimTestContext},
+        state::Mode::{self, *},
+        test::{ExemptionFeatures, NeovimBackedTestContext},
     };
 
     #[gpui::test]
@@ -610,22 +607,6 @@ mod test {
             .await;
     }
 
-    #[gpui::test]
-    async fn test_g_prefix_and_abort(cx: &mut gpui::TestAppContext) {
-        let mut cx = VimTestContext::new(cx, true).await;
-
-        // Can abort with escape to get back to normal mode
-        cx.simulate_keystroke("g");
-        assert_eq!(cx.mode(), Normal);
-        assert_eq!(
-            cx.active_operator(),
-            Some(Operator::Namespace(Namespace::G))
-        );
-        cx.simulate_keystroke("escape");
-        assert_eq!(cx.mode(), Normal);
-        assert_eq!(cx.active_operator(), None);
-    }
-
     #[gpui::test]
     async fn test_gg(cx: &mut gpui::TestAppContext) {
         let mut cx = NeovimBackedTestContext::new(cx).await;