revert: build: enable signed commits in automated PR workflows

This commit reverts #11195.

Author: Planeshifter

.github/workflows/lint_random_files.yml

@@ -604,4 +604,3 @@ jobs:
             reviewers
           branch: 'fix-lint-errors'
           delete-branch: true
-          sign-commits: true

.github/workflows/markdown_equations.yml

@@ -188,7 +188,6 @@ jobs:
             reviewers
           branch: markdown-insert-equations
           delete-branch: true
-          sign-commits: true
 
       # Create Markdown summary of the pull request:
       - name: 'Create summary'

.github/workflows/markdown_pkg_urls.yml

@@ -162,4 +162,3 @@ jobs:
             reviewers
           branch: markdown-pkg-urls
           delete-branch: true
-          sign-commits: true

.github/workflows/markdown_related_packages.yml

@@ -174,4 +174,3 @@ jobs:
             reviewers
           branch: markdown-related-packages
           delete-branch: true
-          sign-commits: true

.github/workflows/markdown_tocs.yml

@@ -140,7 +140,6 @@ jobs:
             reviewers
           branch: update-namespace-tocs
           delete-branch: true
-          sign-commits: true
 
       # Create Markdown summary of the pull request:
       - name: 'Create summary'

.github/workflows/namespace_exports.yml

@@ -146,4 +146,3 @@ jobs:
             reviewers
           branch: update-namespace-exports
           delete-branch: true
-          sign-commits: true

.github/workflows/update_cli_permissions.yml

@@ -112,4 +112,3 @@ jobs:
             reviewers
           branch: update-cli-permissions
           delete-branch: true
-          sign-commits: true

.github/workflows/update_contributors.yml

@@ -131,7 +131,6 @@ jobs:
             reviewers
           branch: update-contributors
           delete-branch: true
-          sign-commits: true
 
       # Create a pull request summary:
       - name: 'Create summary'

.github/workflows/update_error_databases.yml

@@ -174,4 +174,3 @@ jobs:
             reviewers
           branch: update-error-databases
           delete-branch: true
-          sign-commits: true

.github/workflows/update_math_scaffold_databases.yml

@@ -142,7 +142,6 @@ jobs:
             reviewers
           branch: update-math-scaffold-databases
           delete-branch: true
-          sign-commits: true
 
       # Create a pull request summary:
       - name: 'Create summary'