src: remove unused constant from node_perf.h

PR-URL: #15548
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Daniel Bevenius <daniel.bevenius@gmail.com>
Reviewed-By: Minwoo Jung <minwoo@nodesource.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>

src/node_perf.h

@@ -12,7 +12,6 @@
 #include "v8.h"
 #include "uv.h"
 
-#include <limits>
 #include <string>
 
 namespace node {
@@ -41,8 +40,6 @@ static inline PerformanceEntryType ToPerformanceEntryTypeEnum(
   return NODE_PERFORMANCE_ENTRY_TYPE_INVALID;
 }
 
-const double MAX_DOUBLE = std::numeric_limits<double>::max();
-
 NODE_EXTERN inline void MarkPerformanceMilestone(
     Environment* env,
     PerformanceMilestone milestone) {