gha: remove working-dir and GOPATH

We're only working with modules in this repo, so we should not have
a need for this.

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

.github/workflows/ci.yml

@@ -20,6 +20,7 @@ jobs:
 
       - name: Set env
         shell: bash
+        # TODO(thaJeztah): remove working-directory, path, and GOPATH once project-checks stops needing them; see https://github.com/containerd/nri/pull/53/commits/872fb0ce3dce136f3ae67c068ce78607565194ef#r1324366346
         run: |
           echo "GOPATH=${{ github.workspace }}" >> $GITHUB_ENV
           echo "${{ github.workspace }}/bin" >> $GITHUB_PATH
@@ -40,22 +41,17 @@ jobs:
 
     steps:
       - uses: actions/checkout@v3
-        with:
-          path: src/github.com/containerd/nri
-
       - uses: actions/setup-go@v3
         with:
           go-version: 1.20.x
 
       - name: Set env
         shell: bash
         run: |
-          echo "GOPATH=${{ github.workspace }}" >> $GITHUB_ENV
           echo "${{ github.workspace }}/bin" >> $GITHUB_PATH
 
       - run: |
           make all
-        working-directory: src/github.com/containerd/nri
 
   linters:
     name: Linters
@@ -69,23 +65,18 @@ jobs:
 
     steps:
       - uses: actions/checkout@v3
-        with:
-          path: src/github.com/containerd/nri
-
       - uses: actions/setup-go@v3
         with:
           go-version: ${{ matrix.go }}
 
       - name: Set env
         shell: bash
         run: |
-          echo "GOPATH=${{ github.workspace }}" >> $GITHUB_ENV
           echo "${{ github.workspace }}/bin" >> $GITHUB_PATH
 
       - uses: golangci/golangci-lint-action@v3
         with:
           version: v1.51.2
-          working-directory: src/github.com/containerd/nri
 
   tests:
     name: Tests
@@ -98,19 +89,14 @@ jobs:
 
     steps:
       - uses: actions/checkout@v3
-        with:
-          path: src/github.com/containerd/nri
-
       - uses: actions/setup-go@v3
         with:
           go-version: ${{ matrix.go }}
 
       - name: Set env
         shell: bash
         run: |
-          echo "GOPATH=${{ github.workspace }}" >> $GITHUB_ENV
           echo "${{ github.workspace }}/bin" >> $GITHUB_PATH
 
       - run: |
           make install-ginkgo test codecov
-        working-directory: src/github.com/containerd/nri