(build) Remove reporting to CodeCov

After thinking about it, there are currently no unit tests for
Cake.Twitter so failing to report to CodeCov isn't a big deal, so let's
just stop this from happening for now.

Author: gep13

recipe.cake

@@ -12,7 +12,8 @@ BuildParameters.SetParameters(context: Context,
                             shouldRunDotNetCorePack: true,
                             shouldRunInspectCode:!AppVeyor.IsRunningOnAppVeyor,
                             preferredBuildProviderType: BuildProviderType.GitHubActions,
-                            shouldGenerateDocumentation: false);
+                            shouldGenerateDocumentation: false,
+                            shouldRunCodecov: false);
 
 BuildParameters.PrintParameters(Context);