build: Remove accidentally included package reference

Author: twpol

Source/RunActivity/RunActivity.csproj

@@ -679,7 +679,6 @@
     </PackageReference>
     <PackageReference Include="Newtonsoft.Json" Version="13.0.1" />
     <PackageReference Include="RailDriver" Version="0.7.10" />
-    <PackageReference Include="StyleCop.Analyzers" Version="1.1.118" PrivateAssets="All" />
     <PackageReference Include="System.Management" Version="6.0.0" />
     <PackageReference Include="System.ValueTuple" Version="4.5.0" />
     <PackageReference Include="Unosquare.Swan.Lite" Version="3.0.0" />