Maybe remove Assertions after assertThatExceptionOfType

Author: timtebeek

src/main/java/org/openrewrite/java/testing/assertj/JUnitAssertThrowsToAssertExceptionType.java

@@ -87,6 +87,7 @@ && getCursor().getParentTreeCursor().getValue() instanceof J.Block) {
                             );
                     maybeAddImport("org.assertj.core.api.AssertionsForClassTypes", "assertThatExceptionOfType");
                     maybeRemoveImport("org.junit.jupiter.api.Assertions.assertThrows");
+                    maybeRemoveImport("org.junit.jupiter.api.Assertions");
                 }
             }
             return mi;