Java: remove redundant import

Author: Jami Cogswell

java/ql/src/experimental/Security/CWE/CWE-089/MyBatisMapperXmlSqlInjection.ql

@@ -15,7 +15,6 @@
 import java
 import MyBatisCommonLib
 import MyBatisMapperXmlSqlInjectionLib
-import semmle.code.java.frameworks.MyBatis
 import semmle.code.java.dataflow.FlowSources
 private import semmle.code.java.security.Sanitizers
 import MyBatisMapperXmlSqlInjectionFlow::PathGraph