Remove duplicate MaxEmptyLinesToKeep from clang-format (#2016)

[ROCm/rccl commit: caffd013f6]

projects/rccl/.clang-format

@@ -95,7 +95,6 @@ IndentPPDirectives: BeforeHash
 IndentWrappedFunctionNames: true
 KeepEmptyLinesAtTheStartOfBlocks: true
 LambdaBodyIndentation: Signature
-MaxEmptyLinesToKeep: 1
 MacroBlockBegin: ''
 MacroBlockEnd: ''
 MaxEmptyLinesToKeep: 1