Remove timeout and call to Fatal from goroutine (#7797)

agent/proxycfg/manager_test.go

@@ -485,12 +485,6 @@ func TestManager_deliverLatest(t *testing.T) {
 		Port:    2222,
 	}
 
-	// Put an overall time limit on this test case so we don't have to guard every
-	// call to ensure the whole test doesn't deadlock.
-	time.AfterFunc(100*time.Millisecond, func() {
-		t.Fatal("test timed out")
-	})
-
 	// test 1 buffered chan
 	ch1 := make(chan *ConfigSnapshot, 1)