nss: Remove two files from sources that were removed in all conditionals.
-rw-r--r-- 3589 README.chromium
drwxr-xr-x - nspr
-rw-r--r-- 46376 nss.gyp
drwxr-xr-x - nss
drwxr-xr-x - patches
drwxr-xr-x - scripts