[committed] Make sysdeps/generic/libc.abilist empty

[Joseph Myers]

The __libc_single_threaded symbol was accidentally added to this file
in commit 706ad1e7af37be1d25fc2359bda006d31fe0d11b.

diff --git a/sysdeps/generic/libc.abilist b/sysdeps/generic/libc.abilist
index 8ca9b93c2f..e69de29bb2 100644
--- a/sysdeps/generic/libc.abilist
+++ b/sysdeps/generic/libc.abilist
@@ -1 +0,0 @@
-GLIBC_2.32 __libc_single_threaded D 0x1

-- 
Joseph S. Myers
joseph@codesourcery.com