ENH: Update imstkSolveDependencies module based on commontk/Artichoke@4176c39f9

Removes obsolete setting of CMAKE_GENERATOR_* variables in imstk_add_external_project,
indeed these variables are now automatically passed to projects from within
the updated imstkSolveDependencies CMake module.

Author: jcfr

CMake/Utilities/imstkAddExternalProject.cmake

@@ -78,14 +78,6 @@ macro(imstk_add_external_project extProj)
   # If needs to download and build
   #-----------------------------------------------------------------------------
   if(NOT DEFINED ${extProj}_DIR AND NOT ${USE_SYSTEM_${extProj}})
-    #-----------------------------------------------------------------------------
-    # Ensure all generator info is passed to external library build
-    #-----------------------------------------------------------------------------
-    set (COMMON_CMAKE_EP_ARGS
-      CMAKE_GENERATOR ${CMAKE_GENERATOR}
-      CMAKE_GENERATOR_PLATFORM ${CMAKE_GENERATOR_PLATFORM}
-      CMAKE_GENERATOR_TOOLSET ${CMAKE_GENERATOR_TOOLSET}
-    )
 
     imstk_define_external_dirs( ${extProj} )
 
@@ -98,7 +90,6 @@ macro(imstk_add_external_project extProj)
       BINARY_DIR ${${extProj}_BINARY_DIR} # from above or parsed argument
       TMP_DIR ${${extProj}_TMP_DIR}       # from above
       STAMP_DIR ${${extProj}_STAMP_DIR}   # from above
-      ${COMMON_CMAKE_EP_ARGS}             # from above
       ${${extProj}_EP_ARGS}               # from ExternalProject_Include_Dependencies
       ${${extProj}_UNPARSED_ARGUMENTS}    # from unparsed arguments of this macro
       DEPENDS ${${extProj}_DEPENDENCIES}  # from parsed argument