update pack and readme

Author: Neutree

README_ZH.md

@@ -44,15 +44,15 @@ from maix import camera, display, image, nn
 
 classifier = nn.Classifier(model="/root/models/mobilenetv2.mud")
 cam = camera.Camera(classifier.input_width(), classifier.input_height(), classifier.input_format())
-dis = display.Display()
+disp = display.Display()
 
 while 1:
     img = cam.read()
     res = classifier.classify(img)
     max_idx, max_prob = res[0]
     msg = f"{max_prob:5.2f}: {classifier.labels[max_idx]}"
     img.draw_string(10, 10, msg, image.COLOR_RED)
-    dis.show(img)
+    disp.show(img)
 ```
 
 效果视频:

tools/os/gen_os.sh

@@ -138,7 +138,6 @@ cp "$MAIXCDK_PATH/components/maixcam_lib/lib/libmaixcam_lib.so" tmp/sys_builtin_
 if [ $board_name == "maixcam-pro" ]; then
     cp -f "tmp/sys_builtin_files/boot/maixcam_pro_logo.jpeg" "tmp/sys_builtin_files/boot/logo.jpeg"
     cp "tmp/sys_builtin_files/boot/boards/board.maixcam_pro" "tmp/sys_builtin_files/boot/board"
-    sed -i 's/^panel=.*/panel=st7701_lct024bsi20/' "tmp/sys_builtin_files/boot/uEnv.txt"
 else
     cp "tmp/sys_builtin_files/boot/boards/board.maixcam" "tmp/sys_builtin_files/boot/board"
 fi