Revert .net6.0 explicit installs (#2913)

.github/workflows/apicompatibility.yml

@@ -9,18 +9,11 @@ on:
 jobs:
   build-test:
     runs-on: windows-latest
-    # https://github.com/actions/setup-dotnet/issues/122
     env:
       CheckAPICompatibility: true
-      DOTNET_MULTILEVEL_LOOKUP: 1
     steps:
     - uses: actions/checkout@v2
 
-    - uses: actions/setup-dotnet@v1
-      with:
-        dotnet-version: '6.0.x'
-        include-prerelease: true
-
     - name: Install dependencies
       run: dotnet restore
 

.github/workflows/code-coverage.yml

@@ -13,7 +13,6 @@ on:
 jobs:
   build-test-report:
     runs-on: ${{ matrix.os }}
-    # https://github.com/actions/setup-dotnet/issues/122
 
     strategy:
       fail-fast: false
@@ -21,18 +20,12 @@ jobs:
         os: [windows-latest]
     env:
       OS: ${{ matrix.os }}
-      DOTNET_MULTILEVEL_LOOKUP: 1
 
     steps:
     - uses: actions/checkout@v2
       with:
         fetch-depth: 0 # fetching all
 
-    - uses: actions/setup-dotnet@v1
-      with:
-        dotnet-version: '6.0.x'
-        include-prerelease: true
-
     - name: Install dependencies
       run: dotnet restore
 

.github/workflows/integration.yml

@@ -13,9 +13,6 @@ on:
 jobs:
   redis-test:
     runs-on: ubuntu-latest
-    # https://github.com/actions/setup-dotnet/issues/122
-    env:
-      DOTNET_MULTILEVEL_LOOKUP: 1
     strategy:
       fail-fast: false
       matrix:
@@ -23,19 +20,11 @@ jobs:
     steps:
       - uses: actions/checkout@v2
 
-      - uses: actions/setup-dotnet@v1
-        with:
-          dotnet-version: '6.0.x'
-          include-prerelease: true
-
       - name: Run redis docker-compose.integration
         run: docker-compose --file=test/OpenTelemetry.Instrumentation.StackExchangeRedis.Tests/docker-compose.yml --file=build/docker-compose.${{ matrix.version }}.yml --project-directory=. up --exit-code-from=tests --build
 
   sql-test:
     runs-on: ubuntu-latest
-    # https://github.com/actions/setup-dotnet/issues/122
-    env:
-      DOTNET_MULTILEVEL_LOOKUP: 1
     strategy:
       fail-fast: false
       matrix:
@@ -43,19 +32,11 @@ jobs:
     steps:
       - uses: actions/checkout@v2
 
-      - uses: actions/setup-dotnet@v1
-        with:
-          dotnet-version: '6.0.x'
-          include-prerelease: true
-
       - name: Run sql docker-compose.integration
         run: docker-compose --file=test/OpenTelemetry.Instrumentation.SqlClient.Tests/docker-compose.yml --file=build/docker-compose.${{ matrix.version }}.yml --project-directory=. up --exit-code-from=tests --build
 
   w3c-trace-context-test:
     runs-on: ubuntu-latest
-    # https://github.com/actions/setup-dotnet/issues/122
-    env:
-      DOTNET_MULTILEVEL_LOOKUP: 1
     strategy:
       fail-fast: false
       matrix:
@@ -63,19 +44,11 @@ jobs:
     steps:
       - uses: actions/checkout@v2
 
-      - uses: actions/setup-dotnet@v1
-        with:
-          dotnet-version: '6.0.x'
-          include-prerelease: true
-
       - name: Run W3C Trace Context docker-compose.integration
         run: docker-compose --file=test/OpenTelemetry.Instrumentation.W3cTraceContext.Tests/docker-compose.yml --file=build/docker-compose.${{ matrix.version }}.yml --project-directory=. up --exit-code-from=tests --build
 
   otlp-exporter-test:
     runs-on: ubuntu-latest
-    # https://github.com/actions/setup-dotnet/issues/122
-    env:
-      DOTNET_MULTILEVEL_LOOKUP: 1
     strategy:
       fail-fast: false
       matrix:
@@ -83,10 +56,5 @@ jobs:
     steps:
       - uses: actions/checkout@v2
 
-      - uses: actions/setup-dotnet@v1
-        with:
-          dotnet-version: '6.0.x'
-          include-prerelease: true
-
       - name: Run OTLP Exporter docker-compose.integration
         run: docker-compose --file=test/OpenTelemetry.Exporter.OpenTelemetryProtocol.Tests/docker-compose.yml --file=build/docker-compose.${{ matrix.version }}.yml --project-directory=. up --exit-code-from=tests --build

.github/workflows/linux-ci.yml

@@ -13,9 +13,6 @@ on:
 jobs:
   build-test:
     runs-on: ubuntu-latest
-    # https://github.com/actions/setup-dotnet/issues/122
-    env:
-      DOTNET_MULTILEVEL_LOOKUP: 1
 
     strategy:
       matrix:
@@ -24,19 +21,6 @@ jobs:
     steps:
     - uses: actions/checkout@v2
 
-    - uses: actions/setup-dotnet@v1
-      with:
-        dotnet-version: '3.1.x'
-
-    - uses: actions/setup-dotnet@v1
-      with:
-        dotnet-version: '5.0.x'
-
-    - uses: actions/setup-dotnet@v1
-      with:
-        dotnet-version: '6.0.x'
-        include-prerelease: true
-
     - name: Install dependencies
       run: dotnet restore
 
@@ -44,6 +28,4 @@ jobs:
       run: dotnet build --configuration Release --no-restore
 
     - name: Test ${{ matrix.version }}
-      env:
-        DOTNET_MULTILEVEL_LOOKUP: 1
       run: dotnet test **/bin/**/${{ matrix.version }}/*.Tests.dll --configuration Release --no-build --logger:"console;verbosity=detailed"

.github/workflows/publish-packages-1.0.yml

@@ -32,11 +32,6 @@ jobs:
         fetch-depth: 0 # fetching all
         ref: ${{ matrix.branches }}
 
-    - uses: actions/setup-dotnet@v1
-      with:
-        dotnet-version: '6.0.x'
-        include-prerelease: true
-
     - name: Install dependencies
       run: dotnet restore
 

.github/workflows/windows-ci.yml

@@ -13,9 +13,6 @@ on:
 jobs:
   build-test:
     runs-on: windows-latest
-    # https://github.com/actions/setup-dotnet/issues/122
-    env:
-      DOTNET_MULTILEVEL_LOOKUP: 1
 
     strategy:
       matrix:
@@ -24,11 +21,6 @@ jobs:
     steps:
     - uses: actions/checkout@v2
 
-    - uses: actions/setup-dotnet@v1
-      with:
-        dotnet-version: '6.0.x'
-        include-prerelease: true
-
     - name: Install dependencies
       run: dotnet restore