update CI workflow for bundle fetching

.circleci/config.yml

@@ -86,22 +86,10 @@ commands:
             git fetch --all
   fetch_builtin_actors:
     steps:
-      - restore_cache:
-          name: restore builtin actors bundle cache
-          keys:
-            - 'builtin-actors-v8.car'
-          paths:
-            - build/builtin-actors/
       - run:
           name: fetch builtin actor bundles
           command: |
             build/builtin-actors/fetch-bundles.sh
-      - save_cache:
-          name: save builtin actors bundle cache
-          key: 'builtin-actors-v8.car'
-          paths:
-            - build/builtin-actors/
-
   packer_build:
     description: "Run a packer build"
     parameters:

.circleci/template.yml

@@ -86,22 +86,10 @@ commands:
             git fetch --all
   fetch_builtin_actors:
     steps:
-      - restore_cache:
-          name: restore builtin actors bundle cache
-          keys:
-            - 'builtin-actors-v8.car'
-          paths:
-            - build/builtin-actors/
       - run:
           name: fetch builtin actor bundles
           command: |
             build/builtin-actors/fetch-bundles.sh
-      - save_cache:
-          name: save builtin actors bundle cache
-          key: 'builtin-actors-v8.car'
-          paths:
-            - build/builtin-actors/
-
   packer_build:
     description: "Run a packer build"
     parameters: