Remove rustup install

Author: termoshtt

azure-pipelines.yml

@@ -80,12 +80,5 @@ jobs:
     pool:
       vmImage: 'windows-2019'
     steps:
-      - script: |
-          rmdir /s /q %USERPROFILE%\.rustup
-          curl -sSf -o rustup-init.exe https://win.rustup.rs
-          rustup-init.exe -y 2>&1
-          set PATH=%PATH%;%USERPROFILE%\.cargo\bin
-          echo '##vso[task.setvariable variable=PATH;]%PATH%;%USERPROFILE%\.cargo\bin'
-        displayName: install rustup on Windows
       - script: cargo test -v --features=intel-mkl --no-default-features 2>&1
         displayName: run test