go meta lint errors

pkg/services/alerting/eval_context.go

@@ -125,7 +125,7 @@ func (c *EvalContext) GetNewState() m.AlertStateType {
 		return ns
 	}
 
-	since := time.Now().Sub(c.Rule.LastStateChange)
+	since := time.Since(c.Rule.LastStateChange)
 	if c.PrevAlertState == m.AlertStatePending && since > c.Rule.For {
 		return m.AlertStateAlerting
 	}

pkg/services/alerting/eval_context_test.go

@@ -36,7 +36,6 @@ func TestGetStateFromEvalContext(t *testing.T) {
 		name     string
 		expected models.AlertStateType
 		applyFn  func(ec *EvalContext)
-		focus    bool
 	}{
 		{
 			name:     "ok -> alerting",