change in document description.

Author: HemangChothani

firestore/docs/index.rst

@@ -2,11 +2,11 @@
 
 .. note::
 
-   Because the firestore client uses :mod:`grpc` library and the third-party
-   :mod:`requests` library, it is safe to share instances across threads.
-   In multiprocessing scenarios, the best practice is to create client
-   instances *after* the invocation of :func:`os.fork` by
-   :class:`multiprocessing.Pool` or :class:`multiprocessing.Process`.
+   Because the firestore client uses :mod:`grpcio` library, it is safe to
+   share instances across threads. In multiprocessing scenarios, the best
+   practice is to create client instances *after* the invocation of
+   :func:`os.fork` by :class:`multiprocessing.Pool` or
+   :class:`multiprocessing.Process`.
 
 API Reference
 -------------