Remove cache_go_mod job from CI config

Author: Adam Hughes

.circleci/config.yml

@@ -22,28 +22,10 @@ jobs:
           name: Check for Lint
           command: markdownlint .
 
-  cache_go_mod:
-    <<: *defaults
-    steps:
-      - checkout
-      - restore_cache:
-          keys:
-            - go-mod-{{ checksum "go.sum" }}
-      - run:
-          name: Populate Go Mod Cache
-          command: go mod download
-      - save_cache:
-          key: go-mod-{{ checksum "go.sum" }}
-          paths:
-            - '/go/pkg/mod'
-
   build_source:
     <<: *defaults
     steps:
       - checkout
-      - restore_cache:
-          keys:
-            - go-mod-{{ checksum "go.sum" }}
       - run:
           name: Build Source
           command: go build -mod=readonly ./...
@@ -52,9 +34,6 @@ jobs:
     <<: *defaults
     steps:
       - checkout
-      - restore_cache:
-          keys:
-            - go-mod-{{ checksum "go.sum" }}
       - run:
           name: Install golangci-lint
           command: curl -sfL https://install.goreleaser.com/github.com/golangci/golangci-lint.sh | sh -s -- -b $(go env GOPATH)/bin v1.18.0
@@ -66,9 +45,6 @@ jobs:
     <<: *defaults
     steps:
       - checkout
-      - restore_cache:
-          keys:
-            - go-mod-{{ checksum "go.sum" }}
       - run:
           name: Run Tests
           command: go test -coverprofile cover.out -race ./...
@@ -81,13 +57,6 @@ workflows:
   build_and_test:
     jobs:
       - lint_markdown
-      - cache_go_mod
-      - build_source:
-          requires:
-            - cache_go_mod
-      - lint_source:
-          requires:
-            - cache_go_mod
-      - unit_test:
-          requires:
-            - cache_go_mod
+      - build_source
+      - lint_source
+      - unit_test