Removing duplicate info in the README

Author: jeffswartz

README.md

@@ -457,59 +457,6 @@ $opentok->dial($sessionId, $token, $sipUri, $options);
 For more information, see the [OpenTok SIP Interconnect developer
 guide](https://tokbox.com/developer/guides/sip/).
 
-## Force Disconnect
-
-Your application server can disconnect a client from an OpenTok session by calling the `forceDisconnect($sessionId, $connectionId)`
-method of the `OpenTok\OpenTok` class.
-
-```php
-use OpenTok\OpenTok;
-
-// Force disconnect a client connection
-$opentok->forceDisconnect($sessionId, $connectionId);
-```
-
-## Sending Signals
-
-Once a Session is created, you can send signals to everyone in the session or to a specific connection.
-You can send a signal by calling the `signal($sessionId, $payload, $connectionId)` method of the
-`OpenTok\OpenTok` class.
-
-The `$sessionId` parameter is the session ID of the session.
-
-The `$payload` parameter is an associative array used to set the
-following:
-
-- `data` (string) -- The data string for the signal. You can send a maximum of 8kB.
-
-- `type` (string) -- — (Optional) The type string for the signal. You can send a maximum of 128 characters, and only the following characters are allowed: A-Z, a-z, numbers (0-9), '-', '\_', and '~'.
-
-The `$connectionId` parameter is an optional string used to specify the connection ID of
-a client connected to the session. If you specify this value, the signal is sent to
-the specified client. Otherwise, the signal is sent to all clients connected to the session.
-
-```php
-use OpenTok\OpenTok;
-
-// Send a signal to a specific client
-$signalPayload = array(
-    'data' => 'some signal message',
-    'type' => 'signal type'
-);
-$connectionId = 'da9cb410-e29b-4c2d-ab9e-fe65bf83fcaf';
-$opentok->signal($sessionId, $signalPayload, $connectionId);
-
-// Send a signal to everyone in the session
-$signalPayload = array(
-    'data' => 'some signal message',
-    'type' => 'signal type'
-);
-$opentok->signal($sessionId, $signalPayload);
-```
-
-For more information, see the [OpenTok signaling developer
-guide](https://tokbox.com/developer/guides/signaling/).
-
 ## Samples
 
 There are three sample applications included in this repository. To get going as fast as possible, clone the whole