Drop K/N dependency to JCenter

kotlin-native/tools/benchmarksAnalyzer/build.gradle

@@ -23,7 +23,6 @@ buildscript {
     apply from: "$rootBuildDirectory/gradle/kotlinGradlePlugin.gradle"
 
     repositories {
-        jcenter()
         mavenCentral()
     }
 
@@ -38,7 +37,6 @@ repositories {
     maven {
         url project.bootstrapKotlinRepo
     }
-    jcenter()
     mavenCentral()
 }
 

kotlin-native/tools/benchmarksAnalyzer/buildSrc/build.gradle.kts

@@ -25,7 +25,6 @@ buildscript {
     repositories {
         maven("https://maven.pkg.jetbrains.space/kotlin/p/kotlin/kotlin-dependencies")
         mavenCentral()
-        jcenter()
         project.bootstrapKotlinRepo?.let {
             maven(url = it)
         }
@@ -49,7 +48,6 @@ plugins {
 val cacheRedirectorEnabled = findProperty("cacheRedirectorEnabled")?.toString()?.toBoolean() == true
 repositories {
     maven("https://maven.pkg.jetbrains.space/kotlin/p/kotlin/kotlin-dependencies")
-    jcenter()
     mavenCentral()
     gradlePluginPortal()
     extra["bootstrapKotlinRepo"]?.let {