Removed a duplicated entry in the config file (#7981)

Author: ChrisNguyenGeek

modules/swagger-codegen/src/main/resources/META-INF/services/io.swagger.codegen.CodegenConfig

@@ -33,7 +33,6 @@ io.swagger.codegen.languages.JavaInflectorServerCodegen
 io.swagger.codegen.languages.JavaJAXRSCXFCDIServerCodegen
 io.swagger.codegen.languages.JavaJAXRSSpecServerCodegen
 io.swagger.codegen.languages.JavaJerseyServerCodegen
-io.swagger.codegen.languages.JavaJerseyServerCodegen
 io.swagger.codegen.languages.JavaMSF4JServerCodegen
 io.swagger.codegen.languages.JavaPKMSTServerCodegen
 io.swagger.codegen.languages.JavaPlayFrameworkCodegen