Remove pattern_file input and use default pattern file for flakiness test

Author: soulomoon

.github/workflows/flakiness.yml

@@ -40,10 +40,6 @@ on:
         description: 'Comma-separated Tasty patterns to run each iteration (overrides default)'
         required: false
         default: ''
-      pattern_file:
-        description: 'Path to a file with one Tasty pattern per line (overrides test_patterns)'
-        required: false
-        default: 'scripts/flaky-test-patterns.txt'
 
 jobs:
   loop:
@@ -83,7 +79,7 @@ jobs:
           SLEEP_SECS: ${{ github.event.inputs.sleep_secs || '0' }}
           LOG_STDERR: '1'
           TEST_PATTERNS: ${{ github.event.inputs.test_patterns }}
-          PATTERN_FILE: ${{ github.event.inputs.pattern_file }}
+          PATTERN_FILE: 'scripts/flaky-test-patterns.txt'
           NO_BUILD_ONCE: '1'
         run: |
           # Run with a sensible default of 1000 iterations on PRs;