Remove AppVeyor build support

Author: mauroservienti

src/ServiceComposer.AspNetCore.Testing/ServiceComposer.AspNetCore.Testing.csproj

@@ -55,12 +55,4 @@
         </PackageReference>
     </ItemGroup>
 
-    <Target Name="AppVeyorPullRequestsTarget" AfterTargets="MinVer" Condition="'$(APPVEYOR_PULL_REQUEST_NUMBER)' != ''">
-        <PropertyGroup>
-            <PackageVersion>$(MinVerMajor).$(MinVerMinor).$(MinVerPatch)-PR.$(APPVEYOR_PULL_REQUEST_NUMBER).$(MinVerPreRelease)</PackageVersion>
-            <PackageVersion Condition="'$(MinVerBuildMetadata)' != ''">$(PackageVersion)+$(MinVerBuildMetadata)</PackageVersion>
-            <Version>$(PackageVersion)</Version>
-        </PropertyGroup>
-    </Target>
-
 </Project>