fix: remove jcenter in android build (#32)

Signed-off-by: Ariel Gentile <gentilester@gmail.com>

Author: genaris

packages/anoncreds-react-native/android/build.gradle

@@ -4,7 +4,6 @@ import java.nio.file.Paths
 buildscript {
   repositories {
     google()
-    jcenter()
     mavenCentral()
   }