libc: Consolidate unified definitions

As supporting architectures aside from AArch32 and AArch64 is not a
concern, keeping identical definitions in two places for a large part
of the libc seems counterproductive

The int128 types were left un-unified as __int128 is not supported by
gcc on AArch32

Signed-off-by: Bence Szépkúti <bence.szepkuti@arm.com>
Change-Id: Idf08e6fab7e4680d9da62d3c57266ea2d80472cf
diff --git a/include/lib/libc/aarch32/time_.h b/include/lib/libc/aarch32/time_.h
index a9169c2..cfd487d 100644
--- a/include/lib/libc/aarch32/time_.h
+++ b/include/lib/libc/aarch32/time_.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2018-2019, ARM Limited and Contributors. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -12,6 +12,4 @@
 #define SIZET_
 #endif
 
-typedef long int time_t;
-
 #endif /* TIME__H */