Remove the unnecessary mutex from gcal

modules/gcal/display.go

@@ -29,9 +29,6 @@ func (widget *Widget) display() {
 		return
 	}
 
-	widget.mutex.Lock()
-	defer widget.mutex.Unlock()
-
 	widget.View.SetTitle(widget.ContextualTitle(widget.settings.common.Title))
 	widget.View.SetText(widget.contentFrom(widget.calEvents))
 }

modules/gcal/widget.go

@@ -1,7 +1,6 @@
 package gcal
 
 import (
-	"sync"
 	"time"
 
 	"github.com/rivo/tview"
@@ -14,7 +13,6 @@ type Widget struct {
 	app       *tview.Application
 	calEvents []*CalEvent
 	ch        chan struct{}
-	mutex     sync.Mutex
 	settings  *Settings
 }