remove hard code tsinghua

Link: https://code.alibaba-inc.com/Ali-MaaS/MaaS-lib/codereview/13314592
* remove hard code tsinghua

.dev_scripts/ci_container_test.sh

@@ -1,5 +1,4 @@
 if [ "$MODELSCOPE_SDK_DEBUG" == "True" ]; then
-    pip config set global.index-url https://pypi.tuna.tsinghua.edu.cn/simple
     pip install -r requirements/tests.txt
     git config --global --add safe.directory /Maas-lib
     git config --global user.email tmp

setup.cfg

@@ -26,6 +26,3 @@ exclude = docs/src,*.pyi,.git
 
 [darglint]
 ignore=DAR101
-
-[easy_install]
-index-url=https://pypi.tuna.tsinghua.edu.cn/simple