removed i686

It is too old to be practically useful

Author: Enmk

.github/workflows/windows_mingw.yml

@@ -39,7 +39,6 @@ jobs:
       matrix:
         include:
           - { sys: mingw64, env: x86_64 }
-          - { sys: mingw32, env: i686 }
           - { sys: ucrt64,  env: ucrt-x86_64 }  # Experimental!
          # - { sys: clang64, env: clang-x86_64 } # have issues with linking see comments in Clang-related section in clickhouse/CMakeLists.txt