Remove alias deprecation note

Signed-off-by: Larsen, Steffen <steffen.larsen@intel.com>

adoc/chapters/programming_interface.adoc

@@ -9846,10 +9846,6 @@ below.
 include::{header_dir}/pointer.h[lines=4..-1]
 ----
 
-Note that using [code]#global_ptr#, [code]#local_ptr#, [code]#constant_ptr# or
-[code]#private_ptr# without specifying the decoration is deprecated.
-The default argument is provided for compatibility with 1.2.1.
-
 
 [[subsec:samplers]]
 === Image samplers