call: remove dead code

Tuleap: #13
Change-Id: Ic948160e96a0f5e232871863407fa920292318ac

src/call.cpp

@@ -265,20 +265,6 @@ Call::toggleRecording()
     return startRecording;
 }
 
-std::string Call::getTypeStr() const
-{
-    switch (type_) {
-        case CallType::INCOMING:
-            return "incoming";
-        case CallType::OUTGOING:
-            return "outgoing";
-        case CallType::MISSED:
-            return "missed";
-        default:
-            return "";
-    }
-}
-
 std::map<std::string, std::string>
 Call::getDetails() const
 {

src/call.h

@@ -349,8 +349,6 @@ class Call : public Recordable, public std::enable_shared_from_this<Call> {
     private:
         bool validStateTransition(CallState newState);
 
-        std::string getTypeStr() const;
-
         /** Protect every attribute that can be changed by two threads */
         mutable std::recursive_mutex callMutex_ {};