Update java/ql/lib/semmle/code/java/frameworks/android/SharedPreferences.qll

Author: atorralba

java/ql/lib/semmle/code/java/frameworks/android/SharedPreferences.qll

@@ -1,7 +1,7 @@
 /** Provides classes related to `android.content.SharedPreferences`. */
 
 import java
-import semmle.code.java.dataflow.ExternalFlow
+private import semmle.code.java.dataflow.ExternalFlow
 
 /** The interface `android.content.SharedPreferences`. */
 class SharedPreferences extends Interface {