Fix checkstyle

Author: filiphr

src/main/java/org/mapstruct/intellij/expression/JavaExpressionInjector.java

@@ -97,7 +97,7 @@ else if ( resolved instanceof PsiParameter ) {
                 return;
             }
 
-            PsiMethod method = PsiTreeUtil.getParentOfType( annotationParameterList, PsiMethod.class );;
+            PsiMethod method = PsiTreeUtil.getParentOfType( annotationParameterList, PsiMethod.class );
             if ( method == null ) {
                 return;
             }