Update arduino.py

Author: Jason2866

builder/frameworks/arduino.py

@@ -283,17 +283,3 @@ def call_compile_libs():
     else:
         PIO_BUILD = "pioarduino-build.py"
     SConscript(join(platform.get_package_dir("framework-arduinoespressif32"), "tools", PIO_BUILD))
-    #
-    # Custom target: firmware-metrics using esp-idf-size
-    #
-    def print_firmware_metrics(target, source, env):
-        map_file = os.path.join(env.subst("$BUILD_DIR"), "firmware.map")
-        if os.path.isfile(map_file):
-            try:
-                import esp_idf_size
-                print("[INFO] Running esp-idf-size on %s" % map_file)
-                env.Execute("$PYTHONEXE -m esp-idf-size \" \"{map_file}\"")
-            except:
-                pass
-
-    env.AlwaysBuild(env.Alias("firmware-metrics", None, print_firmware_metrics))