runtime/cases: Fix case numbers, missing cases and unused classes

gcc: Removed unneded lines.

multilib: fixed case number.

syslog: added a missing test.

[YOCTO #10964]

(From OE-Core rev: 3f1c57191802309e58a7b3b42e8ec812e83bd8ed)

Signed-off-by: Mariano Lopez <mariano.lopez@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/lib/oeqa/runtime/cases/multilib.py

@@ -23,9 +23,9 @@ class MultilibTest(OERuntimeTestCase):
         msg = "%s isn't %s (is %s)" % (binary, arch, theclass)
         self.assertEqual(theclass, arch, msg=msg)
 
+    @OETestID(1593)
     @skipIfNotInDataVar('MULTILIBS', 'multilib:lib32',
                         "This isn't a multilib:lib32 image")
-    @OETestID(201)
     @OETestDepends(['ssh.SSHTest.test_ssh'])
     def test_check_multilib_libc(self):
         """