remove (std::nothrow) where nullptr case is not handled

remove legacy new management

libraries/esp8266/examples/ConfigFile/ConfigFile.ino

@@ -25,10 +25,7 @@ bool loadConfig() {
   }
 
   // Allocate a buffer to store contents of the file.
-  std::unique_ptr<char[]> buf(new (std::nothrow) char[size]);
-  if (buf == nullptr) {
-    return false;
-  }
+  std::unique_ptr<char[]> buf(new char[size]);
 
   // We don't use String here because ArduinoJson library requires the input
   // buffer to be mutable. If you don't use ArduinoJson, you may as well

libraries/esp8266/examples/SerialStress/SerialStress.ino

@@ -72,7 +72,7 @@ void setup() {
 
   // using HardwareSerial0 pins,
   // so we can still log to the regular usbserial chips
-  SoftwareSerial* ss = new (std::nothrow) SoftwareSerial(3, 1);
+  SoftwareSerial* ss = new SoftwareSerial(3, 1);
   ss->begin(SSBAUD);
   ss->enableIntTx(false);
   logger = ss;