delete unused LoadBalanceAlgorithm

internal/ingress/controller/config/config.go

@@ -76,9 +76,6 @@ const (
 	// http://nginx.org/en/docs/http/ngx_http_ssl_module.html#ssl_session_cache
 	sslSessionCacheSize = "10m"
 
-	// Default setting for load balancer algorithm
-	defaultLoadBalancerAlgorithm = ""
-
 	// Parameters for a shared memory zone that will keep states for various keys.
 	// http://nginx.org/en/docs/http/ngx_http_limit_conn_module.html#limit_conn_zone
 	defaultLimitConnZoneVariable = "$binary_remote_addr"
@@ -381,9 +378,6 @@ type Configuration struct {
 	// http://nginx.org/en/docs/ngx_core_module.html#worker_shutdown_timeout
 	WorkerShutdownTimeout string `json:"worker-shutdown-timeout,omitempty"`
 
-	// Defines the load balancing algorithm to use. The deault is round-robin
-	LoadBalanceAlgorithm string `json:"load-balance,omitempty"`
-
 	// Sets the bucket size for the variables hash table.
 	// http://nginx.org/en/docs/http/ngx_http_map_module.html#variables_hash_bucket_size
 	VariablesHashBucketSize int `json:"variables-hash-bucket-size,omitempty"`
@@ -637,7 +631,6 @@ func NewDefault() Configuration {
 		UseGeoIP2:                  false,
 		WorkerProcesses:            strconv.Itoa(runtime.NumCPU()),
 		WorkerShutdownTimeout:      "10s",
-		LoadBalanceAlgorithm:       defaultLoadBalancerAlgorithm,
 		VariablesHashBucketSize:    128,
 		VariablesHashMaxSize:       2048,
 		UseHTTP2:                   true,

internal/ingress/controller/template/configmap_test.go

@@ -151,11 +151,3 @@ func TestMergeConfigMapToStruct(t *testing.T) {
 		t.Errorf("unexpected diff: (-got +want)\n%s", diff)
 	}
 }
-
-func TestDefaultLoadBalance(t *testing.T) {
-	conf := map[string]string{}
-	to := ReadConfig(conf)
-	if to.LoadBalanceAlgorithm != "" {
-		t.Errorf("default load balance algorithm wrong")
-	}
-}