Fix import

Author: rvermeulen

java/ql/src/Security/CWE/CWE-089/SqlInjectionLib.qll

@@ -1,6 +1,6 @@
 /** Definitions used by the queries for database query injection. */
 
-import semmle.code.java.Expr
+import java
 import semmle.code.java.dataflow.FlowSources
 import semmle.code.java.security.QueryInjection
 import semmle.code.java.frameworks.android.SQLite