Log Message:
rtl-sdr: fix build by not adding "inline" twice

This package has long had patches to change "inline" to "static
inline", and somewhat recently added a SUBST_ stanza to do the same
thing, resulting in "static static inline".  This commit drops the
patches, and has been build tested on netbsd-8/vbearmv7hf-el and MacOS
(and hence clang).

PKGREVISION++, even though in theory any previous build shouldn't change.