[release/7.0-staging] Remove Win7 Helix queues (#100986)

Co-authored-by: Jeremy Koritzinsky <[email protected]>

Author: github-actions[bot]

eng/pipelines/libraries/helix-queues-setup.yml

@@ -161,7 +161,6 @@ jobs:
       - ${{ if notIn(parameters.jobParameters.framework, 'net48') }}:
         # mono outerloop
         - ${{ if and(eq(parameters.jobParameters.testScope, 'outerloop'), eq(parameters.jobParameters.runtimeFlavor, 'mono')) }}:
-          - Windows.7.Amd64.Open
           - Windows.11.Amd64.Client.Open
         # libraries on coreclr (outerloop and innerloop), or libraries on mono innerloop
         - ${{ if or(ne(parameters.jobParameters.testScope, 'outerloop'), ne(parameters.jobParameters.runtimeFlavor, 'mono')) }}:
@@ -170,7 +169,6 @@ jobs:
             - Windows.Amd64.Server2022.Open
           - ${{ if or(ne(parameters.jobParameters.isExtraPlatforms, true), eq(parameters.jobParameters.includeAllPlatforms, true)) }}:
             - Windows.Amd64.Server2022.Open
-            - Windows.7.Amd64.Open
 
       # .NETFramework
       - ${{ if eq(parameters.jobParameters.framework, 'net48') }}: