Remove obsolete testing runner files and views

Author: nightskylark

.github/actions/run-qunit-tests/action.yml

@@ -85,11 +85,6 @@ runs:
       shell: bash
       run: pnpm install --frozen-lockfile
 
-    - name: Build dotnet
-      working-directory: ./packages/devextreme
-      shell: bash
-      run: dotnet build build/build-dotnet.sln
-
     - name: Run QUnit tests
       working-directory: ./packages/devextreme
       shell: bash

.github/workflows/qunit_tests.yml

@@ -66,8 +66,6 @@ jobs:
       shell: bash
       env:
         DEVEXTREME_TEST_CI: "true"
-        DOTNET_CLI_TELEMETRY_OPTOUT: "true"
-        DOTNET_SKIP_FIRST_TIME_EXPERIENCE: "true"
       run: pnpx nx build:systemjs
 
     - name: Zip artifacts

packages/devextreme/build/build-dotnet.sln

@@ -792,12 +792,6 @@
         {
           "env": "DEVEXTREME_TEST_CI"
         },
-        {
-          "env": "DOTNET_CLI_TELEMETRY_OPTOUT"
-        },
-        {
-          "env": "DOTNET_SKIP_FIRST_TIME_EXPERIENCE"
-        },
         "default",
         "test"
       ],