DCMTK External project - Fix unused CMake variable warnings

CMakeExternals/DCMTK.cmake

@@ -54,9 +54,9 @@ IF(${add_project})
         -DDCMTK_WITH_XML:BOOL=OFF  # see github issue #25
         -DDCMTK_FORCE_FPIC_ON_UNIX:BOOL=ON 
         ${CMAKE_OSX_EXTERNAL_PROJECT_ARGS}
-        -DBUILD_TESTING:BOOL=OFF
-        -DDCMTK_BUILD_APPS:BOOL=ON # Build also dmctk tools (movescu, storescp, ...)
-        -DDCMTK_OVERWRITE_WIN32_COMPILER_FLAGS:BOOL=OFF)
+        #-DBUILD_TESTING:BOOL=OFF # Not used
+        -DDCMTK_OVERWRITE_WIN32_COMPILER_FLAGS:BOOL=OFF
+      )
     SET(DCMTK_DIR ${ep_install_dir})
 
 # This was used during heavy development on DCMTK itself.