lintian: Fix useless deps, priority, and a silly recommends.

Change-Id: I90689c96a0d5da274583ea0c8afefa9ec2f310eb
diff --git a/debian/control b/debian/control
index 5aa8f8c..9291e8a 100644
--- a/debian/control
+++ b/debian/control
@@ -5,11 +5,9 @@
 Build-Depends: debhelper (>= 10),
                cdbs (>= 0.4.93~),
                gnome-pkg-tools (>= 0.7),
-               autotools-dev,
                automake (>= 1.14),
                autoconf (>= 2.69),
                libtool (>= 2.2.6),
-               dh-autoreconf,
                autopoint (>= 0.17),
                zlib1g-dev (>= 1:1.1.4),
                libglib2.0-dev (>= 2.40),
@@ -49,7 +47,7 @@
 Architecture: any
 Multi-Arch: same
 Section: debug
-Priority: extra
+Priority: optional
 Depends: libgstreamer1.0-0 (= ${binary:Version}),
          ${misc:Depends}
 Description: Core GStreamer libraries and elements
@@ -74,7 +72,6 @@
          libglib2.0-dev,
          ${shlibs:Depends},
          ${misc:Depends},
-Recommends: debhelper
 Description: GStreamer core development files
  GStreamer is a streaming media framework, based on graphs of filters
  which operate on media data.  Applications using this library can do