Remove the net9.0 tests that were added in the cherry-pick

Author: marcpopMSFT

src/Tests/Microsoft.NET.Publish.Tests/GivenThatWeWantToPublishASingleFileApp.cs

@@ -638,7 +638,6 @@ public void ILLink_analyzer_warnings_are_produced_using_EnableSingleFileAnalyzer
         [InlineData("netstandard2.0;net5.0", true)] // None of these TFMs are supported for single-file
         [InlineData("netstandard2.0;net6.0", false)] // Net6.0 is the min TFM supported for single-file and targeting.
         [InlineData("netstandard2.0;net8.0", false)] // Net8.0 is supported for single-file
-        [InlineData("netstandard2.0;net9.0", true)] // Net9.0 is supported for single-file, but leaves a "gap" for the supported net6./net7.0 TFMs.
         [InlineData("alias-ns2", true)]
         [InlineData("alias-n6", false)]
         [InlineData("alias-n6;alias-n8", false)] // If all TFMs are supported, there's no warning even though the project uses aliases.

src/Tests/Microsoft.NET.Publish.Tests/GivenThatWeWantToPublishAnAotApp.cs

@@ -595,7 +595,6 @@ public void IsAotCompatible_implies_enable_analyzers(string targetFramework)
         [InlineData("netstandard2.0;net5.0", true)] // None of these TFMs are supported for AOT
         [InlineData("netstandard2.0;net7.0", false)] // Net7.0 is the min TFM supported for AOT and targeting.
         [InlineData("netstandard2.0;net8.0", false)] // net8.0 is supported for AOT and targeting.
-        [InlineData("netstandard2.0;net9.0", true)] // Net9.0 is supported for AOT, but leaves a "gap" for the supported net8.0 TFMs.
         [InlineData("alias-ns2", true)]
         [InlineData("alias-n6", false)]
         [InlineData("alias-n7;alias-n8", false)] // If all TFMs are supported, there's no warning even though the project uses aliases.

src/Tests/Microsoft.NET.Publish.Tests/GivenThatWeWantToRunILLink.cs

@@ -171,7 +171,6 @@ public void PublishTrimmed_fails_for_unsupported_target_framework(string targetF
         [InlineData("netstandard2.0;net5.0", true)] // None of these TFMs are supported for trimming
         [InlineData("netstandard2.0;net6.0", false)] // net6.0 is the min TFM supported for trimming and targeting.
         [InlineData("netstandard2.0;net8.0", false)] // Net8.0 is supported for trimming and targeting.
-        [InlineData("netstandard2.0;net9.0", true)] // Net8.0 is supported for trimming, but leaves a "gap" for the supported net6.0/net7.0 TFMs.
         [InlineData("alias-ns2", true)]
         [InlineData("alias-n6", false)]
         [InlineData("alias-n6;alias-n8", false)] // If all TFMs are supported, there's no warning even though the project uses aliases.