Remove AINT8

- Updated C and Py serialization libraries, updated licence files
- Removed AINT8 from TOSA reference tests

Signed-off-by: Kevin Cheng <kevin.cheng@arm.com>
Signed-off-by: Jared Smolens <jared.smolens@arm.com>
Change-Id: I860bfeaad5a075e50f569c8f6861927ebacf1378
diff --git a/verif/tosa_serializer.py b/verif/tosa_serializer.py
index 3b7e339..136f7aa 100644
--- a/verif/tosa_serializer.py
+++ b/verif/tosa_serializer.py
@@ -1,6 +1,6 @@
 
 
-# Copyright (c) 2020, ARM Limited.
+# Copyright (c) 2020-2021, ARM Limited.
 #
 #    Licensed under the Apache License, Version 2.0 (the "License");
 #    you may not use this file except in compliance with the License.
@@ -29,7 +29,6 @@
 # here.
 DTypeNames = [ 'UNKNOWN',
                'BOOL',
-               'AINT8',
                'UINT8',
                'INT4',
                'INT8',