Remove unused jcenter repository

build.gradle

@@ -11,10 +11,6 @@ archivesBaseName = project.archives_base_name
 version = project.mod_version
 group = project.maven_group
 
-repositories {
-	jcenter()
-}
-
 dependencies {
 	minecraft("com.mojang:minecraft:${project.minecraft_version}")
 	mappings("net.fabricmc:yarn:${project.yarn_mappings}:v2")