Remove jcenter from settings.gradle

settings.gradle

@@ -1,8 +1,7 @@
 pluginManagement {
     repositories {
-        jcenter()
         maven { url "https://maven.fabricmc.net/" }
-        maven { url "https://maven.shedaniel.me" }
+        maven { url "https://maven.shedaniel.me/" }
         maven { url "https://files.minecraftforge.net/maven/" }
         gradlePluginPortal()
     }