Remove the unneccesary buildscript closure. (reverted from commit 471e759cc0d332855d82e47e3355f111ca288d2b)

worldedit-sponge/build.gradle

@@ -1,3 +1,12 @@
+buildscript {
+    repositories {
+        mavenCentral()
+        maven { url = "http://files.minecraftforge.net/maven" }
+        maven { url = "https://oss.sonatype.org/content/repositories/snapshots/" }
+        jcenter()
+    }
+}
+
 plugins {
     id 'org.spongepowered.plugin' version '0.6'
 }