update

Author: zhangstar333

fe/fe-core/src/main/java/org/apache/doris/nereids/rules/expression/rules/LogToLn.java

@@ -19,7 +19,6 @@
 
 import org.apache.doris.nereids.rules.expression.ExpressionPatternMatcher;
 import org.apache.doris.nereids.rules.expression.ExpressionPatternRuleFactory;
-import org.apache.doris.nereids.rules.expression.ExpressionRuleType;
 import org.apache.doris.nereids.trees.expressions.Expression;
 import org.apache.doris.nereids.trees.expressions.functions.scalar.Ln;
 import org.apache.doris.nereids.trees.expressions.functions.scalar.Log;