remove using namespace

alib2/src/automaton/TM/OneTapeDTM.cpp

@@ -11,9 +11,6 @@
 namespace automaton {
-using namespace std;
-using namespace alphabet;
-
 OneTapeDTM::OneTapeDTM(const State& initialState, const alphabet::Symbol& blank) : SingleInitialState(initialState), BlankSymbolInputTapeAlphabet(blank) {
 }