[statsd] Update notes about buffering in statsd

Since we are at least for the time being disabling buffering by default, the
docs here are being updated to match the changes applied.

doc/source/index.rst

@@ -159,28 +159,8 @@ an instance of :class:`datadog.threadstats.ThreadStats`::
 
 datadog.dogstatsd
 =================
-:mod:`datadog.dogstatsd` is a Python client for DogStatsd that automatically
-buffers submitted metrics and submits them to the server asynchronously or at
-maximum sizes for a packet that would prevent fragmentation.
-
-.. note::
-
-    To ensure that all the metrics are sent to the server, either use the
-    context-managed instance of :class:`~datadog.dogstatsd.base.DogStatsd`
-    or when you are finished with the client perform a manual :code:`flush()`.
-    Otherwise the buffered data may get de-allocated before being sent.
-
-
-.. warning::
-
-    :class:`~datadog.dogstatsd.base.DogStatsd` instances are not :code:`fork()`-safe
-    because the automatic buffer flushing occurs in a thread only on the
-    process that created the :class:`~datadog.dogstatsd.base.DogStatsd`
-    instance. Because of this, instances of those clients must not be copied
-    from a parent process to a child process. Instead, the parent process and
-    each child process must create their own instances of the client or the
-    buffering must be globally disabled by using the :code:`disable_buffering`
-    initialization flag.
+:mod:`datadog.dogstatsd` is a Python client for DogStatsd that submits metrics
+to the Agent.
 
 
 Usage
@@ -192,7 +172,6 @@ Usage
     
     client = DogStatsd()
     client.increment("home.page.hits")
-    client.flush()
 
 
 .. autoclass::  datadog.dogstatsd.base.DogStatsd
@@ -209,15 +188,6 @@ Usage
     >>> initialize(statsd_host="localhost", statsd_port=8125)
     >>> statsd.increment("home.page.hits")
 
-.. warning::
-
-    Global :class:`~datadog.dogstatsd.base.DogStatsd` is not :code:`fork()`-safe
-    because the automatic buffer flushing occurs in a thread only on the
-    process that created the :class:`~datadog.dogstatsd.base.DogStatsd`
-    instance. Because of this, the parent process and each child process must
-    create their own instances of the client or the buffering must be globally
-    disabled by using the :code:`disable_buffering` initialization flag.
-
 
 Get in Touch
 ============