misc: remove test

CMakeLists.txt

test/contactmodeltester.cpp

test/contactmodeltester.h

test/conversationmodeltester.cpp

test/conversationmodeltester.h

test/databasetester.cpp

test/databasetester.h

test/datatransfertester.cpp

test/datatransfertester.h

test/mocks/callmanager_mock.h

test/mocks/configurationmanager_mock.h

test/mocks/instancemanager_mock.h

test/mocks/presencemanager_mock.h

test/mocks/videomanager_mock.h

test/newaccountmodeltester.cpp

test/newaccountmodeltester.h

test/newcallmodeltester.cpp

test/newcallmodeltester.h

test/newdevicemodeltester.cpp

test/newdevicemodeltester.h