Remove unreachable code

Actions intended to be performed by the unreachable code will never occur.

In CameraBinLocks::lockStatus(QCamera::LockType): Code block
is unreachable because of the syntactic structure of the code (CWE-561)

Coverity-Id: 188406
Change-Id: I55a7ef8e87673519ff4f1ad5677054b34bf66d17
Reviewed-by: Christian Stromme <christian.stromme@qt.io>

src/plugins/gstreamer/camerabin/camerabinlocks.cpp

@@ -102,8 +102,6 @@ QCamera::LockStatus CameraBinLocks::lockStatus(QCamera::LockType lock) const
     default:
         return QCamera::Unlocked;
     }
-
-    return lock == QCamera::LockFocus ? m_focus->focusStatus() : QCamera::Unlocked;
 }
 
 void CameraBinLocks::searchAndLock(QCamera::LockTypes locks)