Removed device->devicetimeout, which is not being used

git-svn-id: https://svn.code.sf.net/p/chan-sccp-b/code/trunk@5275 43c1dc8c-776e-4df2-8ef1-6e829299be21
Remove forceHangup (not used anymore)

git-svn-id: https://svn.code.sf.net/p/chan-sccp-b/code/trunk@5276 43c1dc8c-776e-4df2-8ef1-6e829299be21