dev-python/sphinxcontrib-katex: cleanup obsolete patch

Signed-off-by: Sergey Torokhov <torokhov-s-a@yandex.ru>

dev-python/sphinxcontrib-katex/files/sphinxcontrib-katex-0.9.10_fix_install.patch

@@ -1,11 +0,0 @@
-diff '--color=auto' -Naur a/pyproject.toml b/pyproject.toml
---- a/pyproject.toml
-+++ b/pyproject.toml
-@@ -170,6 +170,7 @@
- #
- # Find all (sub-)modules of the Python package
- [tool.setuptools.packages.find]
-+exclude = ["docs", "tests"]
- 
- [tool.setuptools.dynamic]
- version = {attr = 'sphinxcontrib.katex.__version__'}