Devices: Unify Port Gathering method

All devices that support it use the same mechanism to gather ports
so this patch removes the individual implementations in favor
of a single one in IDevice.cpp.

This patch also removes:
* canAutodetectPorts() as it was not used.
* Port::parseFrom...Output as they are not used anymore.

Change-Id: I8ecedec2d71e60985402387982c64311c5a651e6
Reviewed-by: hjk <hjk@qt.io>
Reviewed-by: <github-actions-qt-creator@cristianadam.eu>

src/plugins/ios/iosdevice.cpp

@@ -185,12 +185,6 @@ Utils::Port IosDevice::nextPort() const
     return Utils::Port(m_lastPort);
 }
 
-bool IosDevice::canAutoDetectPorts() const
-{
-    return true;
-}
-
-
 // IosDeviceManager
 
 IosDeviceManager::TranslationMap IosDeviceManager::translationMap()