DevTools: Remove i686 support

Userland/DevTools/CMakeLists.txt

@@ -3,7 +3,3 @@ add_subdirectory(Inspector)
 add_subdirectory(Profiler)
 add_subdirectory(HackStudio)
 add_subdirectory(SQLStudio)
-
-if("${SERENITY_ARCH}" STREQUAL "i686")
-	add_subdirectory(UserspaceEmulator)
-endif()