[tracker] Remove unused variable in configure.ac

[Ivan Frade <ifrade src gnome org>]

commit 2f5aa1e0e6d7a9ebc3efc6a8ad335469c7f06e99
Author: Ivan Frade <ivan frade nokia com>
Date:   Thu Sep 16 14:38:56 2010 +0300

    Remove unused variable in configure.ac

 configure.ac |    1 -
 1 files changed, 0 insertions(+), 1 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 66c8415..26cf9fa 100644
--- a/configure.ac
+++ b/configure.ac
@@ -150,7 +150,6 @@ LIBFLAC_REQUIRED=1.2.1
 LIBEXIF_REQUIRED=0.6
 LIBGSF_REQUIRED=1.13
 EXEMPI_REQUIRED=2.1.0
-HILDON_THUMBNAIL_REQUIRED=3.0.10
 EVO_REQUIRED=2.25.5
 EDS_REQUIRED=2.25.5
 # Unlikely version for now, Nepomuk integration isn't finished in streamanalyzer atm