remove duplicate skipped_tablet_uid

Author: rahul2393

java-spanner/google-cloud-spanner/src/main/java/com/google/cloud/spanner/spi/v1/KeyRangeCache.java

@@ -639,6 +639,9 @@ && leader().distance <= MAX_LOCAL_REPLICA_DISTANCE) {
         }
       }
       for (int index = 0; index < tablets.size(); index++) {
+        if (checkedLeader && index == leaderIndex) {
+          continue;
+        }
         CachedTablet tablet = tablets.get(index);
         if (!tablet.matches(directedReadOptions)) {
           continue;

java-spanner/google-cloud-spanner/src/test/resources/finder_test.textproto

@@ -7283,10 +7283,6 @@ test_case {
         tablet_uid: 195035137
         incarnation: "\001\331"
       }
-      skipped_tablet_uid {
-        tablet_uid: 195035137
-        incarnation: "\001\331"
-      }
     }
   }
   event {
@@ -8372,10 +8368,6 @@ test_case {
         tablet_uid: 72351745
         incarnation: "\001H"
       }
-      skipped_tablet_uid {
-        tablet_uid: 72351745
-        incarnation: "\001H"
-      }
     }
   }
   event {