[#26] Use MavenCentral instead of JCenter

build.gradle

@@ -2,22 +2,17 @@ import cash.z.ecc.android.Deps
 
 buildscript {
     repositories {
-        mavenLocal()
         google()
-        jcenter()
         mavenCentral()
     }
     dependencies {
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:${Deps.kotlinVersion}"
-        classpath 'com.jfrog.bintray.gradle:gradle-bintray-plugin:1.+'
     }
 }
 
 allprojects {
     repositories {
-        mavenLocal()
         google()
-        jcenter()
         mavenCentral()
     }
 }

buildSrc/build.gradle.kts

@@ -3,7 +3,7 @@ plugins {
 }
 
 repositories {
-    jcenter()
+    mavenCentral()
 }
 
 // Per conversation in the KotlinLang Slack, Gradle uses Java 8 compatibility internally