delete pyYaml lib

Vant Ling · Vant Ling · commit 87ba65ddf041 · 2021-05-26T18:22:37.000+08:00
diff --git a/requirements.txt b/requirements.txt
@@ -1,5 +1,4 @@
 PyMySQL==0.9.3
-PyYAML ==4.2b1
 pytest == 3.5.0
 pymongo == 3.6.1
 selenium == 3.11.0
