Removed ASP.NET metrics linke and relying on Metric overview page

Author: wadepickett

docs/navigate/tools-diagnostics/toc.yml

@@ -402,8 +402,6 @@ items:
                 href: ../../core/diagnostics/built-in-metrics-runtime.md
               - name: .NET extensions metrics
                 href: ../../core/diagnostics/built-in-metrics-diagnostics.md
-              - name: ASP.NET Core metrics
-                href: /aspnet/core/log-mon/metrics/built-in
               - name: System.Net metrics
                 href: ../../core/diagnostics/built-in-metrics-system-net.md
           - name: EventCounters