remove submodules for checkout v2

.github/workflows/ci_e2e.yml

@@ -30,8 +30,6 @@ jobs:
     steps:
 
       - uses: actions/checkout@v2
-        with:
-          submodules: true
       - uses: actions/cache@v1
         with:
           path: ~/.m2/repository

.github/workflows/ci_ut.yml

@@ -30,8 +30,6 @@ jobs:
     steps:
 
       - uses: actions/checkout@v2
-        with:
-          submodules: true
       - uses: actions/cache@v1
         with:
           path: ~/.m2/repository