Remove duplicate map keys in Lettuce TypeHints.

Closes #2314

Author: jjz921024

src/main/java/org/springframework/data/redis/connection/lettuce/LettuceConnection.java

@@ -1061,7 +1061,6 @@ static class TypeHints {
 			COMMAND_OUTPUT_TYPE_MAPPING.put(DECR, IntegerOutput.class);
 			COMMAND_OUTPUT_TYPE_MAPPING.put(DECRBY, IntegerOutput.class);
 			COMMAND_OUTPUT_TYPE_MAPPING.put(DEL, IntegerOutput.class);
-			COMMAND_OUTPUT_TYPE_MAPPING.put(COPY, IntegerOutput.class);
 			COMMAND_OUTPUT_TYPE_MAPPING.put(GETBIT, IntegerOutput.class);
 			COMMAND_OUTPUT_TYPE_MAPPING.put(HDEL, IntegerOutput.class);
 			COMMAND_OUTPUT_TYPE_MAPPING.put(HINCRBY, IntegerOutput.class);
@@ -1104,7 +1103,6 @@ static class TypeHints {
 			// DOUBLE
 			COMMAND_OUTPUT_TYPE_MAPPING.put(HINCRBYFLOAT, DoubleOutput.class);
 			COMMAND_OUTPUT_TYPE_MAPPING.put(INCRBYFLOAT, DoubleOutput.class);
-			COMMAND_OUTPUT_TYPE_MAPPING.put(MGET, ValueListOutput.class);
 			COMMAND_OUTPUT_TYPE_MAPPING.put(ZINCRBY, DoubleOutput.class);
 			COMMAND_OUTPUT_TYPE_MAPPING.put(ZSCORE, DoubleOutput.class);