fs/9p: Remove unused function declaration v9fs_inode2stat()

Commit 531b1094 ("[PATCH] v9fs: zero copy implementation")
declared but never implemented this.
Signed-off-by: Yue Haibing <yuehaibing@huawei.com>
Message-ID: <20230807141726.38860-1-yuehaibing@huawei.com>
Signed-off-by: Dominique Martinet <asmadeus@codewreck.org>

fs/9p/v9fs_vfs.h

@@ -52,7 +52,6 @@ void v9fs_stat2inode_dotl(struct p9_stat_dotl *stat, struct inode *inode,
 			   unsigned int flags);
 int v9fs_dir_release(struct inode *inode, struct file *filp);
 int v9fs_file_open(struct inode *inode, struct file *file);
-void v9fs_inode2stat(struct inode *inode, struct p9_wstat *stat);
 int v9fs_uflags2omode(int uflags, int extended);
 
 void v9fs_blank_wstat(struct p9_wstat *wstat);