remove python2.6 python3.4

Author: KimBioInfoStudio

.github/workflows/main.yml

@@ -7,9 +7,9 @@ jobs:
 
     runs-on: ubuntu-latest
     strategy:
-      max-parallel: 5
+      max-parallel: 1
       matrix:
-        python-version: [2.7, 3.4, 3.5, 3.6, 3.7]
+        python-version: [2.7,3.5, 3.6, 3.7]
 
     steps:
     - uses: actions/checkout@v1