Shrink storage_manager_stub (#5221)

With the recent change to `RestClient`, it's possible to use the object
library `context_resources` now in the specification for the object
library `storage_manager_stub`. This removes independent compilation,
allowing CMake's duplicate object detection to function.

---
TYPE: NO_HISTORY
DESC: Shrink storage_manager_stub

Author: eric-hughes-tiledb

tiledb/api/c_api/context/CMakeLists.txt

@@ -35,15 +35,14 @@ gather_sources(${SOURCES})
 list(APPEND OTHER_SOURCES
     # We need to recompile sources that depend on StorageManager to use the stub
     ../../../sm/storage_manager/context.cc
-    ../../../sm/storage_manager/context_resources.cc
     )
 
 commence(object_library capi_context_stub)
   this_target_sources(${SOURCES} ${OTHER_SOURCES})
   this_target_link_libraries(export)
   this_target_object_libraries(capi_config_stub)
   this_target_object_libraries(storage_manager_stub)
-  this_target_object_libraries(rest_client stats thread_pool vfs)
+  this_target_object_libraries(context_resources)
 conclude(object_library)
 
 add_test_subdirectory()