Remove pthread.h include, it's unused.
Remove pthread.h include, it's unused.

Vocalocity/rtpproxy-pre,dsanders11/rtpproxy,Vocalocity/rtpproxy-pre,dsanders11/rtpproxy,synety-jdebp/rtpproxy,jevonearth/rtpproxy,synety-jdebp/rtpproxy,jevonearth/rtpproxy,sippy/rtpproxy,Vocalocity/rtpproxy-pre,hongbinz/rtpproxy,dsanders11/rtpproxy,synety-jdebp/rtpproxy,hongbinz/rtpproxy,hongbinz/rtpproxy,sippy/rtpproxy,Vocalocity/rtpproxy-pre,hongbinz/rtpproxy,sippy/rtpproxy,jevonearth/rtpproxy,jevonearth/rtpproxy,synety-jdebp/rtpproxy