Hopefully fix the missing display of the first transmission in all modes.

NullDisplay.cpp

@@ -43,10 +43,6 @@ void CNullDisplay::setLockout()
 {
 }
 
-void CNullDisplay::setDStar()
-{
-}
-
 void CNullDisplay::writeDStar(const char* my1, const char* my2, const char* your)
 {
 }
@@ -55,10 +51,6 @@ void CNullDisplay::clearDStar()
 {
 }
 
-void CNullDisplay::setDMR()
-{
-}
-
 void CNullDisplay::writeDMR(unsigned int slotNo, unsigned int srcId, bool group, unsigned int dstId, const char* type)
 {
 }
@@ -67,10 +59,6 @@ void CNullDisplay::clearDMR(unsigned int slotNo)
 {
 }
 
-void CNullDisplay::setFusion()
-{
-}
-
 void CNullDisplay::writeFusion(const char* source, const char* dest)
 {
 }