parser: remove unnecessary retains
-rw-r--r-- 18 .gitignore
-rw-r--r-- 619 LICENSE
-rw-r--r-- 473 Makefile
-rw-r--r-- 2843 Makefile.head
-rw-r--r-- 4502 Makefile.tail
-rw-r--r-- 3151 Makefile.target
drwxr-xr-x - doc
drwxr-xr-x - idl
drwxr-xr-x - idlcomp
drwxr-xr-x - include
drwxr-xr-x - kernel
drwxr-xr-x - lib
drwxr-xr-x - toolchain-patches
drwxr-xr-x - utils