Remove tests and alternative Python implementations

Ad discussed here:
#548 (comment)

Author: MartinThoma

.github/workflows/check-python.yml

@@ -20,9 +20,6 @@ jobs:
       run: |
         python -m pip install --upgrade pip
         pip install -r 00_Utilities/python/ci-requirements.txt
-    - name: Test with pytest
-      run: |
-        pytest -m "not slow"
     - name: Test with mypy
       run: |
         mypy . --exclude 79_Slalom --exclude 27_Civil_War --exclude 38_Fur_Trader --exclude 81_Splat --exclude 09_Battle --exclude 40_Gomoko --exclude 36_Flip_Flop --exclude 43_Hammurabi --exclude 04_Awari --exclude 78_Sine_Wave --exclude 77_Salvo --exclude 34_Digits --exclude 17_Bullfight --exclude 16_Bug

00_Utilities/python/ci-requirements.in

@@ -1,4 +1,3 @@
-pytest
 flake8
 flake8-bugbear
 flake8-comprehensions

00_Utilities/python/ci-requirements.txt

@@ -8,7 +8,6 @@ attrs==20.3.0
     # via
     #   flake8-bugbear
     #   flake8-implicit-str-concat
-    #   pytest
 flake8==4.0.1
     # via
     #   -r ci-requirements.in
@@ -20,8 +19,6 @@ flake8-comprehensions==3.8.0
     # via -r ci-requirements.in
 flake8-implicit-str-concat==0.2.0
     # via -r ci-requirements.in
-iniconfig==1.1.1
-    # via pytest
 mccabe==0.6.1
     # via flake8
 more-itertools==8.12.0
@@ -30,23 +27,11 @@ mypy==0.931
     # via -r ci-requirements.in
 mypy-extensions==0.4.3
     # via mypy
-packaging==21.3
-    # via pytest
-pluggy==1.0.0
-    # via pytest
-py==1.11.0
-    # via pytest
 pycodestyle==2.8.0
     # via flake8
 pyflakes==2.4.0
     # via flake8
-pyparsing==3.0.7
-    # via packaging
-pytest==7.0.1
-    # via -r ci-requirements.in
 tomli==2.0.1
-    # via
-    #   mypy
-    #   pytest
+    # via mypy
 typing-extensions==4.1.1
     # via mypy