pywin32 is no longer necessary for SCons install

https://github.com/SCons/scons/releases/tag/4.1.0
(cherry picked from commit b6f16671ee0247e10b2dba635362fba26395551f)

.github/workflows/windows_builds.yml

@@ -46,7 +46,7 @@ jobs:
     - name: Configuring Python packages
       run: |
         python -c "import sys; print(sys.version)"
-        python -m pip install scons pywin32
+        python -m pip install scons
         python --version
         scons --version
 
@@ -97,7 +97,7 @@ jobs:
     - name: Configuring Python packages
       run: |
         python -c "import sys; print(sys.version)"
-        python -m pip install scons pywin32
+        python -m pip install scons
         python --version
         scons --version