debian/control: Remove libpulse-dev.

Author: mtwebster

debian/control

@@ -20,7 +20,6 @@ Build-Depends:
  libnss3-dev,
  libpango1.0-dev (>= 1.20),
  libpolkit-gobject-1-dev [linux-any],
- libpulse-dev (>= 0.9.16),
  librsvg2-dev [!s390x !hurd-any !kfreebsd-any],
  libsystemd-dev [linux-any],
  libupower-glib-dev (>= 0.99.11),