qemu_capspriv: Drop needless declarations

There are two functions declared in qemu_capspriv.h:
1) virQEMUCapsInitHostCPUModel() which is not used anywhere but
   qemu_capabilities.c,

2) virQEMUCapsSetSEVCapabilities() which is my personal favorite
   but despite that it's never implemented nor called.

Drop them.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Boris Fiuczynski <fiuczy@linux.ibm.com>

src/qemu/qemu_capabilities.c

@@ -3725,7 +3725,7 @@ virQEMUCapsNewHostCPUModel(void)
 }
 
 
-void
+static void
 virQEMUCapsInitHostCPUModel(virQEMUCaps *qemuCaps,
                             virArch hostArch,
                             virDomainVirtType type)

src/qemu/qemu_capspriv.h

@@ -56,11 +56,6 @@ void
 virQEMUCapsSetArch(virQEMUCaps *qemuCaps,
                    virArch arch);
 
-void
-virQEMUCapsInitHostCPUModel(virQEMUCaps *qemuCaps,
-                            virArch hostArch,
-                            virDomainVirtType type);
-
 void
 virQEMUCapsUpdateHostCPUModel(virQEMUCaps *qemuCaps,
                               virArch hostArch,
@@ -97,10 +92,6 @@ virQEMUCapsSetGICCapabilities(virQEMUCaps *qemuCaps,
                               virGICCapability *capabilities,
                               size_t ncapabilities);
 
-void
-virQEMUCapsSetSEVCapabilities(virQEMUCaps *qemuCaps,
-                              virSEVCapability *capabilities);
-
 int
 virQEMUCapsProbeCPUDefinitionsTest(virQEMUCaps *qemuCaps,
                                    qemuMonitor *mon);