[FSSDK-11915] Fix Go Region EU problem (#421)

* [FSSDK-11915] Fix Go Region EU problem

* Implement suggested change request

* Fix test case and correct the default endpoint assertion

Author: esrakartalOpt

pkg/event/processor.go

@@ -161,10 +161,6 @@ func NewBatchEventProcessor(options ...BPOptionConfig) *BatchEventProcessor {
 		p.BatchSize = DefaultBatchSize
 	}
 
-	if p.EventEndPoint == "" {
-		p.EventEndPoint = EventEndPoints["US"]
-	}
-
 	if p.BatchSize > p.MaxQueueSize {
 		p.logger.Warning(
 			fmt.Sprintf("Batch size %d is larger than queue size %d.  Setting to defaults",

pkg/event/processor_test.go

@@ -122,7 +122,7 @@ func TestCustomEventProcessor_Create(t *testing.T) {
 func TestEndPointOptionEventProcessor(t *testing.T) {
 	// Default end point
 	processor := NewBatchEventProcessor()
-	assert.Equal(t, EventEndPoints["US"], processor.EventEndPoint)
+	assert.Equal(t, "", processor.EventEndPoint)
 
 	customEndPoint := "https://logx.optimizely.com"
 	processor = NewBatchEventProcessor(
@@ -133,7 +133,7 @@ func TestEndPointOptionEventProcessor(t *testing.T) {
 func TestEndPointOptionEU(t *testing.T) {
 	// Default end point
 	processor := NewBatchEventProcessor()
-	assert.Equal(t, EventEndPoints["US"], processor.EventEndPoint)
+	assert.Equal(t, "", processor.EventEndPoint)
 
 	euEndpoint := EventEndPoints["EU"]
 	processor = NewBatchEventProcessor(