Eliminate Editor::onDidMoveCursor

If you want to know if a cursor moved, subscribe to the cursor.

src/editor-component.coffee

@@ -346,7 +346,7 @@ EditorComponent = React.createClass
   observeEditor: ->
     {editor} = @props
     @subscribe editor, 'screen-lines-changed', @onScreenLinesChanged
-    @subscribe editor.onDidMoveCursor(@onCursorMoved)
+    @subscribe editor.onDidAddCursor(@onCursorAdded)
     @subscribe editor, 'selection-removed selection-screen-range-changed', @onSelectionChanged
     @subscribe editor, 'selection-added', @onSelectionAdded
     @subscribe editor, 'decoration-added', @onDecorationChanged
@@ -749,6 +749,10 @@ EditorComponent = React.createClass
 
   onStoppedScrollingAfterDelay: null # created lazily
 
+  onCursorAdded: (cursor) ->
+    @subscribe cursor, 'moved', @onCursorMoved
+    @subscribe cursor, 'destroyed', => @unsubscribe(cursor)
+
   onCursorMoved: ->
     @cursorMoved = true
     @requestUpdate()

src/editor.coffee

@@ -318,9 +318,6 @@ class Editor extends Model
   onDidInsertText: (callback) ->
     @emitter.on 'did-insert-text', callback
 
-  onDidMoveCursor: (callback) ->
-    @emitter.on 'did-move-cursor', callback
-
   onDidAddCursor: (callback) ->
     @emitter.on 'did-add-cursor', callback
 
@@ -1863,7 +1860,6 @@ class Editor extends Model
 
   cursorMoved: (cursor, event) ->
     @emit 'cursor-moved', event
-    @emitter.emit 'did-move-cursor', _.extend({cursor}, event)
 
   # Merge cursors that have the same screen position
   mergeCursors: ->