Remove a few unnecessary parentheses

The new version of gofumpt that we are going to update to in a moment
would complain about these.

pkg/config/editor_presets.go

@@ -50,13 +50,13 @@ type editPreset struct {
 	suspend                   func() bool
 }
 
-func returnBool(a bool) func() bool { return (func() bool { return a }) }
+func returnBool(a bool) func() bool { return func() bool { return a } }
 
 // IF YOU ADD A PRESET TO THIS FUNCTION YOU MUST UPDATE THE `Supported presets` SECTION OF docs/Config.md
 func getPreset(shell string, osConfig *OSConfig, guessDefaultEditor func() string) *editPreset {
 	var nvimRemoteEditTemplate, nvimRemoteEditAtLineTemplate, nvimRemoteOpenDirInEditorTemplate string
 	// By default fish doesn't have SHELL variable set, but it does have FISH_VERSION since Nov 2012.
-	if (strings.HasSuffix(shell, "fish")) || (os.Getenv("FISH_VERSION") != "") {
+	if strings.HasSuffix(shell, "fish") || (os.Getenv("FISH_VERSION") != "") {
 		nvimRemoteEditTemplate = `begin; if test -z "$NVIM"; nvim -- {{filename}}; else; nvim --server "$NVIM" --remote-send "q"; nvim --server "$NVIM" --remote-tab {{filename}}; end; end`
 		nvimRemoteEditAtLineTemplate = `begin; if test -z "$NVIM"; nvim +{{line}} -- {{filename}}; else; nvim --server "$NVIM" --remote-send "q"; nvim --server "$NVIM" --remote-tab {{filename}}; nvim --server "$NVIM" --remote-send ":{{line}}<CR>"; end; end`
 		nvimRemoteOpenDirInEditorTemplate = `begin; if test -z "$NVIM"; nvim -- {{dir}}; else; nvim --server "$NVIM" --remote-send "q"; nvim --server "$NVIM" --remote-tab {{dir}}; end; end`

pkg/gocui/tcell_driver.go

@@ -300,15 +300,15 @@ func (g *Gui) pollEvent() GocuiEvent {
 	if g.playRecording {
 		select {
 		case ev := <-g.replayedEvents.Keys:
-			tev = (ev).toTcellEvent()
+			tev = ev.toTcellEvent()
 			task = ev.task
 		case ev := <-g.replayedEvents.Resizes:
-			tev = (ev).toTcellEvent()
+			tev = ev.toTcellEvent()
 		case ev := <-g.replayedEvents.MouseEvents:
-			tev = (ev).toTcellEvent()
+			tev = ev.toTcellEvent()
 			task = ev.task
 		case ev := <-g.replayedEvents.FocusEvents:
-			tev = (ev).toTcellEvent()
+			tev = ev.toTcellEvent()
 			task = ev.task
 		}
 	} else {

pkg/snake/snake.go

@@ -20,7 +20,7 @@ type Game struct {
 	exit chan (struct{})
 
 	// channel for specifying the direction the player wants the snake to go in
-	setNewDir chan (Direction)
+	setNewDir chan Direction
 
 	// allows logging for debugging
 	logger func(string)