Remove query consistency level enum (#60)

Author: alexshtin

temporal/enums/v1/query.proto

@@ -44,11 +44,4 @@ enum QueryRejectCondition {
     QUERY_REJECT_CONDITION_NOT_COMPLETED_CLEANLY = 2;
 }
 
-enum QueryConsistencyLevel {
-    QUERY_CONSISTENCY_LEVEL_UNSPECIFIED = 0;
-    // Eventual indicates that query should be eventually consistent.
-    QUERY_CONSISTENCY_LEVEL_EVENTUAL = 1;
-    // Strong indicates that any events that came before query should be reflected in workflow state before running query.
-    QUERY_CONSISTENCY_LEVEL_STRONG = 2;
-}