CI: disable t-s-c build on Windows

t-s-c has been failing on Windows for a while, just disable it for now.

Author: compnerd

.ci/templates/windows-devtools.yml

@@ -175,6 +175,7 @@ jobs:
 
       - task: CMake@1
         displayName: Build swift-tools-support-core
+        enabled: false
         inputs:
           cmakeArgs: --build $(Build.BinariesDirectory)/tsc