rpm,deb: remove obsolete dependencies

Xen-related dependencies are not needed directly, everything that
libvchan needs should be pulled by that package.

QubesOS/qubes-issues#2771

debian/control

@@ -33,7 +33,6 @@ Depends:
     xserver-xorg-core,
     xinit,
     x11-xserver-utils,
-    xenstore-utils,
     qubes-core-agent (>= 3.0.14),
     qubesdb-vm,
     libpulse0,

gui-agent/Makefile

@@ -25,11 +25,6 @@ OBJS=vmside.o \
 	../gui-common/txrx-vchan.o ../gui-common/error.o ../common/list.o 
 LIBS=-lX11 -lXdamage -lXcomposite `pkg-config --libs vchan-$(BACKEND_VMM)` -lqubesdb
 
-_XENSTORE_H=$(wildcard /usr/include/xenstore.h)
-ifneq "$(_XENSTORE_H)" ""
-        CFLAGS+= -DUSE_XENSTORE_H
-endif
-
 
 all: qubes-gui
 qubes-gui: $(OBJS)

rpm_spec/gui-agent.spec

@@ -47,16 +47,12 @@ BuildRequires:	libXcomposite-devel
 BuildRequires:	libXdamage-devel
 BuildRequires:	libXt-devel
 BuildRequires:	libtool-ltdl-devel
-BuildRequires:	libtool-ltdl-devel
 BuildRequires:	pulseaudio-libs-devel >= 0.9.21, pulseaudio-libs-devel <= 10.0
-BuildRequires:	xen-devel
 BuildRequires:	xorg-x11-server-devel
 BuildRequires:	qubes-libvchan-%{backend_vmm}-devel
 BuildRequires:	qubes-gui-common-devel >= 3.2.0
 BuildRequires:	qubes-db-devel
 Requires:	qubes-core-vm >= 3.0.14
-Requires:	xen-qubes-vm-essentials
-Requires:	xorg-x11-drv-dummy
 Requires:	xorg-x11-xinit
 Requires:	qubes-libvchan-%{backend_vmm}
 Requires:	python-xpyb