Remove unnecessary dependencies

Author: mthalman

eng/Version.Details.xml

@@ -295,14 +295,6 @@
       <Uri>https://github.com/dotnet/runtime</Uri>
       <Sha>6e2274c87c699f6749473b83969f12949e48ec7d</Sha>
     </Dependency>
-    <Dependency Name="System.Buffers" Version="10.0.0-preview.3.25121.11">
-      <Uri>https://github.com/dotnet/runtime</Uri>
-      <Sha>57ed25449ab954595130997679807a471ef85aef</Sha>
-    </Dependency>
-    <Dependency Name="System.Memory" Version="10.0.0-preview.3.25121.11">
-      <Uri>https://github.com/dotnet/runtime</Uri>
-      <Sha>57ed25449ab954595130997679807a471ef85aef</Sha>
-    </Dependency>
     <Dependency Name="System.Collections.Immutable" Version="10.0.0-preview.3.25154.11">
       <Uri>https://github.com/dotnet/runtime</Uri>
       <Sha>6e2274c87c699f6749473b83969f12949e48ec7d</Sha>

eng/Versions.props

@@ -138,11 +138,9 @@
     <MicrosoftBclAsyncInterfacesVersion>10.0.0-preview.3.25154.11</MicrosoftBclAsyncInterfacesVersion>
     <!-- Transitive package to provide coherency in dotnet/extensions -->
     <MicrosoftBclTimeProviderVersion>10.0.0-preview.3.25154.11</MicrosoftBclTimeProviderVersion>
-    <SystemBuffersVersion>10.0.0-preview.3.25121.11</SystemBuffersVersion>
     <SystemCollectionsImmutableVersion>10.0.0-preview.3.25154.11</SystemCollectionsImmutableVersion>
     <SystemDiagnosticsPerformanceCounterVersion>10.0.0-preview.3.25154.11</SystemDiagnosticsPerformanceCounterVersion>
     <SystemIOHashingVersion>10.0.0-preview.3.25154.11</SystemIOHashingVersion>
-    <SystemMemoryVersion>10.0.0-preview.3.25121.11</SystemMemoryVersion>
     <SystemRuntimeCachingVersion>10.0.0-preview.3.25154.11</SystemRuntimeCachingVersion>
     <!-- Packages from dotnet/extensions -->
     <MicrosoftExtensionsDiagnosticsTestingVersion>9.3.0-preview.1.25151.3</MicrosoftExtensionsDiagnosticsTestingVersion>