diff --git a/src/SourceBuild/tarball/patches/runtime/0002-Fully-qualify-conflicting-runtime-and-roslyn-APIs.patch b/src/SourceBuild/tarball/patches/runtime/0002-Fully-qualify-conflicting-runtime-and-roslyn-APIs.patch
deleted file mode 100644
index f88b9fdf3f03..000000000000
--- a/src/SourceBuild/tarball/patches/runtime/0002-Fully-qualify-conflicting-runtime-and-roslyn-APIs.patch
+++ /dev/null
@@ -1,36 +0,0 @@
-From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
-From: Logan Bussell <loganbussell@microsoft.com>
-Date: Thu, 14 Jul 2022 14:53:35 -0700
-Subject: [PATCH 3/5] Fully qualify conflicting runtime and roslyn APIs
-
----
- .../System.Private.CoreLib/gen/EventSourceGenerator.Parser.cs   | 2 +-
- .../System.Text.RegularExpressions/gen/RegexGenerator.Parser.cs | 2 +-
- 2 files changed, 2 insertions(+), 2 deletions(-)
-
-diff --git a/src/libraries/System.Private.CoreLib/gen/EventSourceGenerator.Parser.cs b/src/libraries/System.Private.CoreLib/gen/EventSourceGenerator.Parser.cs
-index 43a498b589a..1bad8f3753c 100644
---- a/src/libraries/System.Private.CoreLib/gen/EventSourceGenerator.Parser.cs
-+++ b/src/libraries/System.Private.CoreLib/gen/EventSourceGenerator.Parser.cs
-@@ -15,7 +15,7 @@ namespace Generators
- {
-     public partial class EventSourceGenerator
-     {
--        private static EventSourceClass? GetSemanticTargetForGeneration(GeneratorAttributeSyntaxContext context, CancellationToken cancellationToken)
-+        private static EventSourceClass? GetSemanticTargetForGeneration(Microsoft.CodeAnalysis.DotnetRuntime.Extensions.GeneratorAttributeSyntaxContext context, CancellationToken cancellationToken)
-         {
-             const string EventSourceAttribute = "System.Diagnostics.Tracing.EventSourceAttribute";
- 
-diff --git a/src/libraries/System.Text.RegularExpressions/gen/RegexGenerator.Parser.cs b/src/libraries/System.Text.RegularExpressions/gen/RegexGenerator.Parser.cs
-index 7a472a994c9..36dc7500bea 100644
---- a/src/libraries/System.Text.RegularExpressions/gen/RegexGenerator.Parser.cs
-+++ b/src/libraries/System.Text.RegularExpressions/gen/RegexGenerator.Parser.cs
-@@ -20,7 +20,7 @@ public partial class RegexGenerator
- 
-         // Returns null if nothing to do, Diagnostic if there's an error to report, or RegexType if the type was analyzed successfully.
-         private static object? GetSemanticTargetForGeneration(
--            GeneratorAttributeSyntaxContext context, CancellationToken cancellationToken)
-+            Microsoft.CodeAnalysis.DotnetRuntime.Extensions.GeneratorAttributeSyntaxContext context, CancellationToken cancellationToken)
-         {
-             var methodSyntax = (MethodDeclarationSyntax)context.TargetNode;
-             SemanticModel sm = context.SemanticModel;