docs/esp.socket: Remove unused file.

docs/library/esp.socket.rst

-class socket -- network socket
-==============================
-
-``socket`` is an object that represents a network socket. Example usage::
-
-    socket = esp.socket()
-    socket.onrecv(print)
-    socket.connect(('207.58.139.247', 80))
-    socket.send('GET /testwifi/index.html HTTP/1.0\r\n\r\n')
-
-Constructors
-------------
-
-.. class:: esp.socket()
-
-    Create and return a socket object.
-
-
-TCP Methods
------------
-
-.. method:: socket.connect(addr)
-
-    Connect to the adress and port specified in the ``addr`` tuple.
-
-.. method:: socket.close()
-
-    Close the connection.
-
-.. method:: socket.accept()
-
-    Accept a single connection from the connection queue.
-
-.. method:: socket.listen(backlog)
-
-    Start listening for incoming connections.
-
-    Note: Only one socket can be listening for connections at a time.
-
-.. method:: socket.bind(addr)
-
-    Bind the socket to the address and port specified by the ``addr`` tuple.
-
-.. method:: socket.send(buf)
-
-    Send the bytes from ``buf``.
-
-.. method:: socket.recv()
-
-    Receive and return bytes from the socket.
-
-
-UDP Methods
------------
-
-.. method:: socket.sendto(data, addr)
-
-    Placeholder for UDP support, not implemented yet.
-
-.. method:: socket.recvfrom(addr)
-
-    Placeholder for UDP support, not implemented yet.
-
-
-Callback Setter Methods
------------------------
-
-.. method:: onconnect(lambda)::
-
-    When connection is established, call the callback ``lambda``.
-
-.. method:: onrecv(lambda)::
-
-    When data is received, call the callback ``lambda``.
-
-.. method:: onsent(lamda)::
-
-    What data is finished sending, call the callback ``lambda``.
-
-.. method:: ondisconnect(lambda)::
-
-    Call the callback ``lambda`` when the connection is closed.