chore: remove redundant files

ref https://github.com/ChrisTitusTech/linutil/security/dependabot

.github/requirements.txt

@@ -1,51 +0,0 @@
-Babel==2.15.0
-bracex==2.5
-cairocffi==1.7.1
-CairoSVG==2.7.1
-certifi==2024.7.4
-cffi==1.17.0
-charset-normalizer==3.3.2
-click==8.1.7
-colorama==0.4.6
-csscompressor==0.9.5
-cssselect2==0.7.0
-defusedxml==0.7.1
-ghp-import==2.1.0
-gitdb==4.0.11
-GitPython==3.1.43
-htmlmin2==0.1.13
-idna==3.7
-Jinja2==3.1.4
-jsmin==3.0.1
-Markdown==3.6
-MarkupSafe==2.1.5
-mergedeep==1.3.4
-mkdocs==1.6.0
-mkdocs-awesome-pages-plugin==2.9.3
-mkdocs-get-deps==0.2.0
-mkdocs-git-revision-date-localized-plugin==1.2.6
-mkdocs-material==9.5.31
-mkdocs-material-extensions==1.3.1
-mkdocs-minify-plugin==0.8.0
-natsort==8.4.0
-packaging==24.1
-paginate==0.5.6
-pathspec==0.12.1
-pillow==10.4.0
-platformdirs==4.2.2
-pycparser==2.22
-Pygments==2.18.0
-pymdown-extensions==10.9
-python-dateutil==2.9.0.post0
-pytz==2024.1
-PyYAML==6.0.2
-pyyaml_env_tag==0.1
-regex==2024.7.24
-requests==2.32.3
-six==1.16.0
-smmap==5.0.1
-tinycss2==1.3.0
-urllib3==2.2.2
-watchdog==4.0.1
-wcmatch==9.0
-webencodings==0.5.1