Remove sysimage docs

Author: davidanthoff

docs/make.jl

@@ -30,7 +30,6 @@ makedocs(
             "Profiler"=>"userguide/profiler.md",
             # "Tasks" => "userguide/tasks.md",
             "Debugging"=>"userguide/debugging.md",
-            "Compiling Sysimages"=>"userguide/compilesysimage.md",
             "Julia Markdown Documents"=>"userguide/weave.md",
             "Remote Development"=>"userguide/remote.md",
             "Test Item Framework"=>"userguide/testitems.md"