Moved DEFAULT_DELAY_BETWEEN_AT_COMMANDS constant to cpp file

Author: Chris Trowbridge

features/cellular/framework/targets/TELIT/ME910/TELIT_ME910.cpp

@@ -59,6 +59,9 @@ static const intptr_t cellular_properties[AT_CellularBase::PROPERTY_MAX] = {
     1,  // PROPERTY_AT_CGEREP
 };
 
+//the delay between sending AT commands
+static const uint16_t DEFAULT_DELAY_BETWEEN_AT_COMMANDS = 20;
+
 TELIT_ME910::TELIT_ME910(FileHandle *fh, PinName pwr, bool active_high)
     : AT_CellularDevice(fh),
       _active_high(active_high),

features/cellular/framework/targets/TELIT/ME910/TELIT_ME910.h

@@ -30,9 +30,6 @@
 #include "DigitalOut.h"
 #include "AT_CellularDevice.h"
 
-//the delay between sending AT commands
-#define DEFAULT_DELAY_BETWEEN_AT_COMMANDS 20
-
 namespace mbed {
 
 class TELIT_ME910 : public AT_CellularDevice {