Remove redundant error code

src/Storages/MergeTree/MergeTreeData.cpp

@@ -106,7 +106,6 @@ namespace ErrorCodes
     extern const int READONLY_SETTING;
     extern const int ABORTED;
     extern const int UNKNOWN_PART_TYPE;
-    extern const int UNEXPECTED_AST_STRUCTURE;
     extern const int UNKNOWN_DISK;
     extern const int NOT_ENOUGH_SPACE;
     extern const int ALTER_OF_COLUMN_IS_FORBIDDEN;

src/Storages/StorageMaterializedView.cpp

@@ -30,7 +30,6 @@ namespace DB
 namespace ErrorCodes
 {
     extern const int NOT_IMPLEMENTED;
-    extern const int LOGICAL_ERROR;
     extern const int INCORRECT_QUERY;
     extern const int QUERY_IS_NOT_SUPPORTED_IN_MATERIALIZED_VIEW;
 }