Revert "Pin win-64 to Visual Studio 17.10 (cl.exe 19.40) (temporary)"

This reverts commit 8559ee9.

Author: jdblischak

.ci_support/win_64_.yaml

@@ -22,8 +22,6 @@ channel_targets:
 - conda-forge main
 cxx_compiler:
 - vs2022
-cxx_compiler_version:
-- '19.40'
 fmt:
 - '11'
 libabseil:

recipe/conda_build_config.yaml

@@ -2,9 +2,6 @@ c_compiler:    # [win]
   - vs2022       # [win]
 cxx_compiler:  # [win]
   - vs2022       # [win]
-# Temporary: Pin win build to Visual Studio 17.10
-cxx_compiler_version:  # [win]
-  - 19.40          # [win]
 # We should be able to remove c_stdlib_version in the future once the mechanics
 # of this new pin has been fully worked out in the conda-forge ecosystem and
 # tooling