build: remove UseZGC option for gradle

It's not necessary to set here now.

Author: WhiredPlanck

gradle.properties

@@ -7,4 +7,4 @@ android.enableJetifier=false
 android.useAndroidX=true
 
 # enlarge heap size to 2GB
-org.gradle.jvmargs=-Xmx2048M -XX:+UseZGC -XX:+HeapDumpOnOutOfMemoryError
+org.gradle.jvmargs=-Xmx2048M -XX:+HeapDumpOnOutOfMemoryError