优化读取回显1024字节显示一个count

Change-Id: Ia1c06d421743419d5e65f7df94f3189091ea2246
diff --git a/mbtk/mbtk_lib/src/mbtk_fs.c b/mbtk/mbtk_lib/src/mbtk_fs.c
index 1e8c2b8..c884e2e 100755
--- a/mbtk/mbtk_lib/src/mbtk_fs.c
+++ b/mbtk/mbtk_lib/src/mbtk_fs.c
@@ -1328,8 +1328,7 @@
 //int mbtk_at_fs_readfile(void *dir_file, int read_offset, int read_size, char* read_buff)
 int mbtk_at_fs_readfile(void *dir_file, int read_offset, int read_size)
 {
-    int at_fs_ret = 0, fd, count, len_size, file_size, len_count = 0, len = 0;
-    int tc = 0;
+    int at_fs_ret = 0, fd, count = 0,file_size, len_count = 0, len = 0;
     char read_buf[1024];
     char Filepath[MBTK_FS_MAX + 1]={0};
     char Pathtmp[MBTK_FS_MAX + 1]={0};