Reverted event changes

This feature was not needed for Android, upon further inspection.

internal/events/event.go

@@ -1,36 +0,0 @@
-package events
-
-import (
-	"sync"
-)
-
-type Event interface {
-	Contains(int) bool
-	Processed()
-	WaitForProcessed()
-}
-
-type EventStruct struct {
-	code int
-	lock sync.Mutex
-}
-
-func (event EventStruct) Contains(code int) bool {
-	return event.code&code != 0
-}
-
-func (event *EventStruct) WaitForProcessed() {
-	event.lock.Lock()
-}
-
-func (event *EventStruct) Processed() {
-	event.lock.Unlock()
-}
-
-func NewEvent(code int) Event {
-	event := &EventStruct{
-		code: code,
-	}
-	event.lock.Lock()
-	return event
-}