disabled appveyor tests since they die with a timeout

appveyor.yml

@@ -1,36 +0,0 @@
-clone_depth: 5
-
-artifacts:
-  - path: bin\nim.exe
-
-platform:
-  - x64
-
-before_build:
-  - git log -1
-  - C:\msys64\usr\bin\bash -lc "pacman --noconfirm -S zlib-devel"
-  - appveyor DownloadFile http://nim-lang.org/download/dlls.zip
-  - 7z e dlls.zip -odlls
-  - del dlls\libcurl.dll
-  - appveyor DownloadFile http://flatassembler.net/fasmw17139.zip
-  - 7z e fasmw17139.zip -obin fasm.exe
-
-build_script:
-  - SET PATH=C:\msys64\mingw64\bin;dlls;bin;%PATH%
-  - gcc -v
-  - git clone -q --depth 1 https://github.com/nim-lang/csources
-  - cd csources
-  - build64.bat
-  - cd ..
-  - nim c koch
-  - koch boot
-  - koch boot -d:release
-
-before_test:
-  - nim e install_nimble.nims
-  - nimble update
-  - nimble install zip
-
-test_script:
-  - nim c --taintMode:on tests/testament/tester
-  - tests\testament\tester --pedantic all