remove IPNetwork implicit from PublicAPI.Shipped.txt

Author: WeihanLi

src/Middleware/HttpOverrides/src/PublicAPI.Shipped.txt

@@ -100,5 +100,4 @@ static Microsoft.AspNetCore.HttpOverrides.ForwardedHeadersDefaults.XOriginalPref
 static Microsoft.AspNetCore.HttpOverrides.ForwardedHeadersDefaults.XOriginalProtoHeaderName.get -> string!
 static Microsoft.AspNetCore.HttpOverrides.IPNetwork.Parse(System.ReadOnlySpan<char> networkSpan) -> Microsoft.AspNetCore.HttpOverrides.IPNetwork!
 static Microsoft.AspNetCore.HttpOverrides.IPNetwork.TryParse(System.ReadOnlySpan<char> networkSpan, out Microsoft.AspNetCore.HttpOverrides.IPNetwork? network) -> bool
-static Microsoft.AspNetCore.HttpOverrides.IPNetwork.implicit operator Microsoft.AspNetCore.HttpOverrides.IPNetwork!(System.Net.IPNetwork ipNetwork) -> Microsoft.AspNetCore.HttpOverrides.IPNetwork!
 static Microsoft.Extensions.DependencyInjection.CertificateForwardingServiceExtensions.AddCertificateForwarding(this Microsoft.Extensions.DependencyInjection.IServiceCollection! services, System.Action<Microsoft.AspNetCore.HttpOverrides.CertificateForwardingOptions!>! configure) -> Microsoft.Extensions.DependencyInjection.IServiceCollection!