Remove feedback button from status bar (#9100)

This PR removes the feedback button from the status bar, as Nathan and I
discussed. We discussed the fact that we likely no longer need to take
up valuable screen real estate for this, with where Zed as at now.

This PR also moves the `Share Feedback...` collab menu item to the
`Help` menu, as that's where VS Code puts their action to send in-app
feedback (which might help with future discoverability) and renames it
to `Give Feedback...`, to make it consistent with the name of the
command palette action.

Release Notes:

- Removed the feedback button from the status bar.

crates/feedback/src/feedback.rs

@@ -2,7 +2,6 @@ use gpui::{actions, AppContext, ClipboardItem, PromptLevel};
 use system_specs::SystemSpecs;
 use workspace::Workspace;
 
-pub mod deploy_feedback_button;
 pub mod feedback_modal;
 
 actions!(feedback, [GiveFeedback, SubmitFeedback]);