Undo workaround for gradle plugin portal jcenter issues

This appears to work without this workaround now from my testing.
See f188cb8

Author: shakuzen

settings.gradle

@@ -2,29 +2,8 @@ pluginManagement {
     repositories {
         mavenCentral()
         maven { url 'https://repo.spring.io/release' }
-        gradlePluginPortal {
-            content {
-                includeGroup('org.gradle')
-                includeGroup('org.gradle.kotlin')
-                includeGroup('org.gradle.kotlin.kotlin-dsl')
-
-                includeGroup('com.gradle')
-                includeGroup('com.gradle.enterprise')
-
-                includeGroup('me.champeau.jmh')
-                includeGroup('io.github.gradle-nexus')
-                includeGroup('gradle.plugin.com.hierynomus.gradle.plugins')
-                includeGroup('org.ajoberstar.grgit')
-                includeGroup('io.spring.nohttp')
-                includeGroup('com.github.johnrengelman.shadow')
-                includeGroup('gradle.plugin.com.github.johnrengelman')
-            }
-
-            metadataSources {
-                mavenPom()
-                ignoreGradleMetadataRedirection()
-            }
-        }
+        // resolve last due to intermittent jcenter issues
+        gradlePluginPortal()
     }
 }