Problem: shipping binaries is a responsibility that requires time

Solution: stop shipping binary releases for Windows. These days there's vcspkg, conda and more
that provide pre-built binaries for Windows.
Being a software supplier requires a lot of time and effort, and we have no bandwidth.

appveyor.yml

@@ -275,19 +275,6 @@ test_script:
          )
   - cmd: if "%APPVEYOR_REPO_TAG%"=="false" (ctest -C "%Configuration%" -V %TEST_OPTIONS%)
 
-deploy:
-  - provider: GitHub
-    tag: $(APPVEYOR_REPO_TAG_NAME)
-    release: libzmq $(APPVEYOR_REPO_TAG_NAME)
-    description: |
-        Windows binaries for libzmq $(APPVEYOR_REPO_TAG_NAME), uploaded from appveyor.
-        Edit after appveyor is done uploading.
-    auth_token:
-      secure: vmAeVtN2qiQgFBCB2I5FDDRtADQ7GUdR9NwAJJyakbiV5OHzLHExDcC/D9Oh5r67
-    draft: true
-    prerelease: false
-    force_update: true # adds files, clobbers release name and description
-
 
 # the analysis build is repeated; apparently appveyor only uses the first section that matches some branch
 for: