Revert "Attempt to reduce the number of embedded stdlib targets being built simultaneously."

This reverts commit dfa1bdb.

Author: artemcm

stdlib/public/Platform/CMakeLists.txt

@@ -83,8 +83,6 @@ if(SWIFT_SHOULD_BUILD_EMBEDDED_STDLIB)
 
   add_custom_target(embedded-darwin)
   add_dependencies(embedded-libraries embedded-darwin)
-
-  set_property(GLOBAL APPEND PROPERTY JOB_POOLS one_job=1)
   foreach(entry ${EMBEDDED_STDLIB_TARGET_TRIPLES})
     string(REGEX REPLACE "[ \t]+" ";" list "${entry}")
     list(GET list 0 arch)
@@ -127,7 +125,6 @@ if(SWIFT_SHOULD_BUILD_EMBEDDED_STDLIB)
       INSTALL_IN_COMPONENT stdlib
       )
     add_dependencies(embedded-darwin embedded-darwin-${mod})
-    set_property(TARGET embedded-darwin-${mod} PROPERTY JOB_POOL_COMPILE one_job)
   endforeach()
 endif()