maybe delete GC percentage to keep it short?

Author: mcabbott

src/execution.jl

@@ -597,12 +597,6 @@ macro btime(args...)
         if $trialallocs != 0
             $print(", ", $prettymemory($memory($trialmin)))
         end
-        if $gctime($trialmean) != 0
-            $print(". GC mean ",
-                # $prettytime($gctime($trialmean); short=true), ", ",
-                $prettypercent($gctime($trialmean) / $time($trialmean)),
-                )
-        end
         $println(")")
         $result
     end)

test/ExecutionTests.jl

@@ -253,7 +253,7 @@ let fname = tempname()
         end
         s2 = read(fname, String)
         try
-            @test occursin(r", mean [0-9.]+ \w*s \([0-9]* allocations?, [0-9]+ bytes. GC mean [0-9.]+ \w*s,", s2)
+            @test occursin(r", mean [0-9.]+ \w*s \([0-9]* allocations?, [0-9]+ bytes", s2)
         catch
             println(stderr, "@btime output didn't match ", repr(s))
             rethrow()