lrc: continue to remove old models

CMakeLists.txt

src/account.cpp

src/account.h

src/accountmodel.cpp

src/accountmodel.h

src/actionextenderdefault.cpp

src/actionextenderdefault.h

src/availableaccountmodel.h

src/bannedcontactmodel.cpp

src/bannedcontactmodel.h

src/call.cpp

src/call.h

src/categorizedbookmarkmodel.cpp

src/categorizedbookmarkmodel.h

src/categorizedcontactmodel.cpp

src/categorizedcontactmodel.h

src/categorizedhistorymodel.cpp

src/categorizedhistorymodel.h

src/certificatemodel.cpp

src/certificatemodel.h