remove trailing comment. (#16)

Prior to this change, we get the following error:
```
Invalid workflow file: .github/workflows/nightly_pip_test.yml#L19
The workflow is not valid. .github/workflows/nightly_pip_test.yml (Line: 19, Col: 9): Unexpected symbol: '#'. Located at position 134 within expression: github.event_name == 'workflow_dispatch' ||
(github.event_name == 'schedule' && github.repository == 'google-ai-edge/ai-edge-torch') # don't run in forks.
```

Author: advaitjain

.github/workflows/mark_stale.yml

@@ -14,7 +14,7 @@ jobs:
   stale:
     if: |
       github.event_name == 'workflow_dispatch' ||
-      (github.event_name == 'schedule' && github.repository == 'google-ai-edge/ai-edge-torch') # don't run in forks.
+      (github.event_name == 'schedule' && github.repository == 'google-ai-edge/ai-edge-torch')
 
     runs-on: ubuntu-latest
     permissions:

.github/workflows/nightly_generative_api.yml

@@ -14,7 +14,7 @@ jobs:
   run-generative-api-examples:
     if: |
       github.event_name == 'workflow_dispatch' ||
-      (github.event_name == 'schedule' && github.repository == 'google-ai-edge/ai-edge-torch') # don't run in forks.
+      (github.event_name == 'schedule' && github.repository == 'google-ai-edge/ai-edge-torch')
 
     name: Generative API Examples
     uses: ./.github/workflows/generative_api_examples.yml

.github/workflows/nightly_model_coverage.yml

@@ -14,7 +14,7 @@ jobs:
   run-model-coverage:
     if: |
       github.event_name == 'workflow_dispatch' ||
-      (github.event_name == 'schedule' && github.repository == 'google-ai-edge/ai-edge-torch') # don't run in forks.
+      (github.event_name == 'schedule' && github.repository == 'google-ai-edge/ai-edge-torch')
 
     name: Model Coverage (nightly)
     uses: ./.github/workflows/model_coverage.yml

.github/workflows/nightly_pip_test.yml

@@ -18,7 +18,7 @@ jobs:
 
     if: |
       github.event_name == 'workflow_dispatch' ||
-      (github.event_name == 'schedule' && github.repository == 'google-ai-edge/ai-edge-torch') # don't run in forks.
+      (github.event_name == 'schedule' && github.repository == 'google-ai-edge/ai-edge-torch')
 
     runs-on: ubuntu-latest
     steps:

.github/workflows/nightly_unittests.yml

@@ -14,7 +14,7 @@ jobs:
   run-unittests-python:
     if: |
       github.event_name == 'workflow_dispatch' ||
-      (github.event_name == 'schedule' && github.repository == 'google-ai-edge/ai-edge-torch') # don't run in forks.
+      (github.event_name == 'schedule' && github.repository == 'google-ai-edge/ai-edge-torch')
 
     name: Unit Tests Python
     uses: ./.github/workflows/unittests_python.yml