Fix git ignore removed records in xmlrpc-c
移除xmlrpc-c中的忽略记录

Signed-off-by: Wanpeng Song <swpustc@mail.ustc.edu.cn>
xmlrpc-c donot need configure again
xmlrpc-c不需要再次配置

Signed-off-by: Wanpeng Song <swpustc@mail.ustc.edu.cn>