Revert "[MIGraphX EP] enable compilation and execution on Windows (21084)" (#21132)
### Description
This reverts commit 1d7bf5694779f16fe65af6e0e7029a02e3a4b05c because it
broken the AMD GPU CI pipeline. Sorry when I reviewed the PR I forgot to
run the AMD GPU CI pipeline.
Will revert the PR first then ask the author to fix the issue.