Remove unused method from CodegenConfig interface

Author: jmini

modules/swagger-codegen/src/main/java/io/swagger/codegen/CodegenConfig.java

@@ -5,8 +5,6 @@
 import java.util.Set;
 
 import com.github.jknack.handlebars.Handlebars;
-import com.github.jknack.handlebars.Helper;
-import com.samskivert.mustache.Mustache.Compiler;
 import io.swagger.v3.oas.models.OpenAPI;
 import io.swagger.v3.oas.models.Operation;
 import io.swagger.v3.oas.models.media.Schema;
@@ -127,8 +125,6 @@ public interface CodegenConfig {
 
     void processOpenAPI(OpenAPI openAPI);
 
-    Compiler processCompiler(Compiler compiler);
-
     String sanitizeTag(String tag);
 
     String toApiFilename(String name);