fix(ci): remove go-client checkout steps

The go-client dependency is resolved from the Go module proxy (no
replace directive in go.mod). The checkout steps were leftover from
a local replace setup and fail on actions/checkout@v6 which no
longer allows paths outside the workspace.

.github/workflows/ci.yml

@@ -19,12 +19,6 @@ jobs:
     steps:
       - uses: actions/checkout@v6
 
-      - name: Checkout go-client (local replace dependency)
-        uses: actions/checkout@v6
-        with:
-          repository: torrentclaw/go-client
-          path: ../go-client
-
       - name: Set up Go
         uses: actions/setup-go@v6
         with:
@@ -43,12 +37,6 @@ jobs:
     steps:
       - uses: actions/checkout@v6
 
-      - name: Checkout go-client (local replace dependency)
-        uses: actions/checkout@v6
-        with:
-          repository: torrentclaw/go-client
-          path: ../go-client
-
       - name: Set up Go
         uses: actions/setup-go@v6
         with:
@@ -66,12 +54,6 @@ jobs:
     steps:
       - uses: actions/checkout@v6
 
-      - name: Checkout go-client (local replace dependency)
-        uses: actions/checkout@v6
-        with:
-          repository: torrentclaw/go-client
-          path: ../go-client
-
       - name: Set up Go
         uses: actions/setup-go@v6
         with:
@@ -88,12 +70,6 @@ jobs:
     steps:
       - uses: actions/checkout@v6
 
-      - name: Checkout go-client (local replace dependency)
-        uses: actions/checkout@v6
-        with:
-          repository: torrentclaw/go-client
-          path: ../go-client
-
       - name: Set up Go
         uses: actions/setup-go@v6
         with:
@@ -116,12 +92,6 @@ jobs:
     steps:
       - uses: actions/checkout@v6
 
-      - name: Checkout go-client (local replace dependency)
-        uses: actions/checkout@v6
-        with:
-          repository: torrentclaw/go-client
-          path: ../go-client
-
       - name: Set up Go
         uses: actions/setup-go@v6
         with: