Revert "fix"

This reverts commit 607c678.

Author: Picazsoo

modules/openapi-generator/src/main/java/org/openapitools/codegen/DefaultGenerator.java

@@ -31,6 +31,7 @@
 import org.apache.commons.io.IOCase;
 import org.apache.commons.lang3.ObjectUtils;
 import org.apache.commons.lang3.StringUtils;
+import org.apache.commons.lang3.Strings;
 import org.openapitools.codegen.api.*;
 import org.openapitools.codegen.config.GlobalSettings;
 import org.openapitools.codegen.ignore.CodegenIgnoreProcessor;
@@ -60,7 +61,6 @@
 import java.util.function.Supplier;
 import java.util.stream.Collectors;
 
-import static org.apache.commons.lang3.StringUtils.removeStart;
 import static org.openapitools.codegen.CodegenConstants.X_INTERNAL;
 import static org.openapitools.codegen.utils.OnceLogger.once;