Update regression_test.yml

Author: HDCharles

.github/workflows/regression_test.yml

@@ -70,12 +70,6 @@ jobs:
             torch-spec: 'torch==2.5.1 --index-url https://download.pytorch.org/whl/cu121'
             gpu-arch-type: "cuda"
             gpu-arch-version: "12.1"
-          - name: CUDA Nightly
-            runs-on: linux.g5.12xlarge.nvidia.gpu
-            torch-spec: '--pre torch==2.6.0.dev20241101 --index-url https://download.pytorch.org/whl/nightly/cu121'
-            gpu-arch-type: "cuda"
-            gpu-arch-version: "12.1"
-
           - name: CPU 2.3
             runs-on: linux.4xlarge
             torch-spec: 'torch==2.3.0 --index-url https://download.pytorch.org/whl/cpu'
@@ -91,11 +85,6 @@ jobs:
             torch-spec: 'torch==2.5.1 --index-url https://download.pytorch.org/whl/cpu'
             gpu-arch-type: "cpu"
             gpu-arch-version: ""
-          - name: CPU Nightly
-            runs-on: linux.4xlarge
-            torch-spec: '--pre torch==2.6.0.dev20241101 --index-url https://download.pytorch.org/whl/nightly/cpu'
-            gpu-arch-type: "cpu"
-            gpu-arch-version: ""
 
     uses: pytorch/test-infra/.github/workflows/linux_job.yml@main
     with: