Revert "[MM-8497] Ability to set Do Not Disturb for a specified period of time (#16067)" (#17657)

This reverts commit 77d42568f9.

model/scheduled_task_test.go

@@ -4,7 +4,6 @@
 package model
 
 import (
-	"sync"
 	"sync/atomic"
 	"testing"
 	"time"
@@ -74,35 +73,3 @@ func TestCancelTask(t *testing.T) {
 	time.Sleep(TASK_TIME + time.Second)
 	assert.EqualValues(t, 0, atomic.LoadInt32(executionCount))
 }
-
-func TestCreateRecurringTaskFromNextIntervalTime(t *testing.T) {
-	TASK_NAME := "Test Recurring Task starting from next interval time"
-	TASK_TIME := time.Second * 2
-
-	var executionTime time.Time
-	var mu sync.Mutex
-	testFunc := func() {
-		mu.Lock()
-		executionTime = time.Now()
-		mu.Unlock()
-	}
-
-	task := CreateRecurringTaskFromNextIntervalTime(TASK_NAME, testFunc, TASK_TIME)
-	defer task.Cancel()
-
-	time.Sleep(TASK_TIME)
-	mu.Lock()
-	expectedSeconds := executionTime.Second()
-	mu.Unlock()
-	assert.EqualValues(t, 0, expectedSeconds%2)
-
-	time.Sleep(TASK_TIME)
-	mu.Lock()
-	expectedSeconds = executionTime.Second()
-	mu.Unlock()
-	assert.EqualValues(t, 0, expectedSeconds%2)
-
-	assert.Equal(t, TASK_NAME, task.Name)
-	assert.Equal(t, TASK_TIME, task.Interval)
-	assert.True(t, task.Recurring)
-}