Fix pack.sh

Author: phnx47

pack.sh

@@ -3,9 +3,7 @@
 if ${APPVEYOR_REPO_TAG} == "true"  ; then
   echo "Pack for NuGet"
   dotnet pack ${APPVEYOR_BUILD_FOLDER}/src/Prometheus.Client.MetricServer -c Release --include-symbols --include-source --no-build -o artifacts/nuget
-  dotnet pack ${APPVEYOR_BUILD_FOLDER}/src/Prometheus.Client.MetricServer.Kestrel -c Release --include-symbols --include-source --no-build -o artifacts/nuget
 else
   echo "Pack for MyGet"
   dotnet pack ${APPVEYOR_BUILD_FOLDER}/src/Prometheus.Client.MetricServer -c Release --include-symbols --include-source --no-build --version-suffix build${APPVEYOR_BUILD_NUMBER} -o artifacts/myget
-  dotnet pack ${APPVEYOR_BUILD_FOLDER}/src/Prometheus.Client.MetricServer.Kestrel -c Release --include-symbols --include-source --no-build --version-suffix build${APPVEYOR_BUILD_NUMBER} -o artifacts/myget
 fi