[PATCH] xfstests: remove recursive include in filter.btrfs

[Eric Sandeen <sandeen@xxxxxxxxxx>]

Not sure how this happened, but filter.btrfs including
itself leads to immense sadness for any file that includes it.
(I got a segfault when I tried to run 307)

Signed-off-by: Eric Sandeen <sandeen@xxxxxxxxxx>
---

diff --git a/common/filter.btrfs b/common/filter.btrfs
index b1aa733..99d04a6 100644
--- a/common/filter.btrfs
+++ b/common/filter.btrfs
@@ -1,7 +1,5 @@
 # Filters for btrfs command output
 
-. ./common/filter.btrfs
-
 # Some, but not all, commands emit "Btrfs <version>"
 _filter_btrfs_version()
 {