Revert "[DO NOT MERGE] Demonstrate how to explicity opt-in to Amazon 2 AMI"

This reverts commit 4121202.

Author: ZainRizvi

.github/workflows/build-docs.yml

@@ -17,7 +17,7 @@ jobs:
     uses: pytorch/test-infra/.github/workflows/linux_job.yml@main
     with:
       job-name: Build doc
-      runner: amz2.linux.2xlarge
+      runner: linux.2xlarge
       repository: pytorch/text
       gpu-arch-type: cpu
       timeout: 120

.github/workflows/test-linux-cpu.yml

@@ -20,7 +20,7 @@ jobs:
       fail-fast: false
     uses: pytorch/test-infra/.github/workflows/linux_job.yml@main
     with:
-      runner: amz2.linux.12xlarge
+      runner: linux.12xlarge
       repository: pytorch/text
       script: |
         # Mark Build Directory Safe

.github/workflows/test-linux-gpu.yml

@@ -21,7 +21,7 @@ jobs:
       fail-fast: false
     uses: pytorch/test-infra/.github/workflows/linux_job.yml@main
     with:
-      runner: amz2.linux.g5.4xlarge.nvidia.gpu
+      runner: linux.g5.4xlarge.nvidia.gpu
       repository: pytorch/text
       gpu-arch-type: cuda
       gpu-arch-version: ${{ matrix.cuda_arch_version }}