Remove unused atom.getVersion method

spec/atom-spec.coffee

@@ -277,7 +277,3 @@ describe "the `atom` global", ->
           atom.activatePackage('ruby-tmbundle', sync: true)
           atom.deactivatePackage('ruby-tmbundle')
           expect(syntax.getProperty(['.source.ruby'], 'editor.commentStart')).toBeUndefined()
-
-  describe ".getVersion", ->
-    it "returns the current version number", ->
-      expect(typeof atom.getVersion()).toBe 'string'

src/atom-application.coffee

@@ -116,9 +116,6 @@ class AtomApplication
       else
         @promptForPath()
 
-    ipc.on 'get-version', (event) =>
-      event.result = @version
-
     ipc.once 'keymap-loaded', (processId, routingId, keyBindingsByCommand) =>
       @applicationMenu.update(keyBindingsByCommand)
 

src/atom.coffee

@@ -257,9 +257,3 @@ window.atom =
       require userInitScriptPath if fsUtils.isFileSync(userInitScriptPath)
     catch error
       console.error "Failed to load `#{userInitScriptPath}`", error.stack, error
-
-  getVersion: ->
-    ipc.sendChannelSync 'get-version'
-
-  isDevMode: ->
-    @getLoadSettings().devMode?