增加基于Region的权重流量策略

discovery-plugin-admin-center/src/main/java/com/nepxion/discovery/plugin/admincenter/endpoint/RouterEndpoint.java

@@ -342,10 +342,6 @@ public class RouterEndpoint {
     }
 
     private int getWeight(String providerRegion, RegionWeightEntity regionWeightEntity) {
-        if (StringUtils.isEmpty(providerRegion)) {
-            return -1;
-        }
-
         if (regionWeightEntity == null) {
             return -1;
         }

discovery-plugin-framework/src/main/java/com/nepxion/discovery/plugin/framework/loadbalance/WeightRandomLoadBalance.java

@@ -152,10 +152,6 @@ public class WeightRandomLoadBalance {
     }
 
     private int getWeight(String providerRegion, RegionWeightEntity regionWeightEntity) {
-        if (StringUtils.isEmpty(providerRegion)) {
-            return -1;
-        }
-
         if (regionWeightEntity == null) {
             return -1;
         }