Remove inapplicable sourcebuild patch for format

src/SourceBuild/tarball/patches/format/0002-Add-explicit-System.Text.Json-dependency.patch

@@ -1,73 +0,0 @@
-From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
-From: Nikola Milosavljevic <nikolam@microsoft.com>
-Date: Mon, 26 Jun 2023 23:46:46 +0000
-Subject: [PATCH] Add explicit System.Text.Json dependency
-
-Adding an excplicit System.Text.Json dependency to prevent transitive dependency to be picked up
-from PSB, via Microsoft.Build package.
-
-Backport: https://github.com/dotnet/format/pull/1887
----
- Directory.Packages.props | 1 +
- eng/Version.Details.xml  | 4 ++++
- eng/Versions.props       | 2 ++
- src/dotnet-format.csproj | 6 ++++++
- 4 files changed, 13 insertions(+)
-
-diff --git a/Directory.Packages.props b/Directory.Packages.props
-index 6b628c22..c9f86593 100644
---- a/Directory.Packages.props
-+++ b/Directory.Packages.props
-@@ -36,5 +36,6 @@
-     <PackageVersion Include="NuGet.Versioning" Version="$(NuGetVersion)" />
-     <PackageVersion Include="System.CommandLine" Version="$(SystemCommandLineVersion)" />
-     <PackageVersion Include="System.CommandLine.Rendering" Version="$(SystemCommandLineRenderingVersion)" />
-+    <PackageVersion Include="System.Text.Json" Version="$(SystemTextJsonVersion)" />
-   </ItemGroup>
- </Project>
-\ No newline at end of file
-diff --git a/eng/Version.Details.xml b/eng/Version.Details.xml
-index cdfa5f5e..86f02b44 100644
---- a/eng/Version.Details.xml
-+++ b/eng/Version.Details.xml
-@@ -13,6 +13,10 @@
-       <Uri>https://github.com/dotnet/command-line-api</Uri>
-       <Sha>c776cd4e906b669b9cce1017fee7d0ba9845d163</Sha>
-     </Dependency>
-+    <Dependency Name="System.Text.Json" Version="6.0.8">
-+      <Uri>https://github.com/dotnet/runtime</Uri>
-+      <Sha>3241df7f2b0f3e2dada8d07229723c79fdbe4991</Sha>
-+    </Dependency>
-   </ProductDependencies>
-   <ToolsetDependencies>
-     <Dependency Name="Microsoft.DotNet.Arcade.Sdk" Version="7.0.0-beta.23316.4">
-diff --git a/eng/Versions.props b/eng/Versions.props
-index 27582078..bccaf176 100644
---- a/eng/Versions.props
-+++ b/eng/Versions.props
-@@ -20,6 +20,8 @@
-     <!-- Dependencies from https://github.com/dotnet/command-line-api -->
-     <SystemCommandLineVersion>2.0.0-beta4.22504.1</SystemCommandLineVersion>
-     <SystemCommandLineRenderingVersion>0.4.0-alpha.22504.1</SystemCommandLineRenderingVersion>
-+    <!-- Dependencies from https://github.com/dotnet/runtime -->
-+    <SystemTextJsonVersion>6.0.8</SystemTextJsonVersion>
-   </PropertyGroup>
-   <!--
-     Other Dependency versions
-diff --git a/src/dotnet-format.csproj b/src/dotnet-format.csproj
-index 5f691e6e..d812f06b 100644
---- a/src/dotnet-format.csproj
-+++ b/src/dotnet-format.csproj
-@@ -54,6 +54,12 @@
-     <PackageReference Include="Microsoft.Extensions.DependencyInjection" />
-     <PackageReference Include="Microsoft.Extensions.FileSystemGlobbing" />
-     <PackageReference Include="Microsoft.Extensions.Logging" />
-+
-+    <!--
-+      Explicit System.Text.Json package reference is required for source-build to pick up the live package.
-+      Avoids picking up an old version via transitive dependency from Microsoft.Build or Microsoft.CodeAnalysis.Workspaces.MSBuild.
-+    -->
-+    <PackageReference Include="System.Text.Json"  Condition=" '$(DotnetBuildFromSource)' == 'true'" />
-   </ItemGroup>
- 
-   <ItemGroup>