Remove bogus check for libcheck, since we check for gstreamer-check and it pulls in the required info from there, and...

Original commit message from CVS:
* Makefile.am:
* configure.ac:
* tests/Makefile.am:
Remove bogus check for libcheck, since we check for
gstreamer-check and it pulls in the required info from there, and we
weren't actually _using_ the information for libcheck ourselves
anyway.
diff --git a/configure.ac b/configure.ac
index 1546302..3bf6d85 100644
--- a/configure.ac
+++ b/configure.ac
@@ -260,13 +260,7 @@
 AG_GST_CHECK_GST_GDP($GST_MAJORMINOR, [$GST_REQ])
 AG_GST_CHECK_GST_CONTROLLER($GST_MAJORMINOR, [$GST_REQ])
 AG_GST_CHECK_GST_CHECK($GST_MAJORMINOR, [$GST_REQ], no)
-
-dnl FIXME: get rid of this by making sure gstreamer-check brings it in
-dnl check for "check", unit testing library/header
-PKG_CHECK_MODULES(CHECK, check >= 0.9.2,
-  AM_CONDITIONAL(HAVE_CHECK, true),
-  AM_CONDITIONAL(HAVE_CHECK, false)
-)
+AM_CONDITIONAL(HAVE_GST_CHECK, test "x$HAVE_GST_CHECK" = "xyes")
 
 dnl Check for documentation xrefs
 GLIB_PREFIX="`$PKG_CONFIG --variable=prefix glib-2.0`"