Log_simple uses identical implementation of do_erase_logs.

* fix build1280.ArduCopter

ArduCopter/Log_simple.pde

@@ -131,6 +131,22 @@ erase_logs(uint8_t argc, const Menu::arg *argv)
     return 0;
 }
 
+static void
+do_erase_logs(void (*delay_cb)(unsigned long))
+{
+	Serial.printf_P(PSTR("\nErasing log...\n"));
+	DataFlash.SetFileNumber(0xFFFF);
+	for(int j = 1; j <= DF_LAST_PAGE; j++) {
+		DataFlash.PageErase(j);
+		DataFlash.StartWrite(j);		// We need this step to clean FileNumbers
+		if(j%128 == 0) Serial.printf_P(PSTR("+"));
+        delay_cb(1);
+	}
+
+	Serial.printf_P(PSTR("\nLog erased.\n"));
+	DataFlash.FinishWrite();
+}
+
 static int8_t
 process_logs(uint8_t argc, const Menu::arg *argv)
 {