build: Remove "pvh_boot" feature flag

This feature is stable and there is no need for this to be behind a
flag. This will also reduce the time needed to run the integration test
as we will not be running them all again under the flag.

Signed-off-by: Rob Bradford <robert.bradford@intel.com>

vmm/Cargo.toml

@@ -10,7 +10,6 @@ acpi = ["acpi_tables","devices/acpi"]
 pci_support = ["pci", "vfio", "vm-virtio/pci_support"]
 mmio_support = ["vm-virtio/mmio_support"]
 cmos = ["devices/cmos"]
-pvh_boot = []
 
 [dependencies]
 arc-swap = ">=0.4.4"

vmm/src/vm.rs

@@ -465,8 +465,7 @@ impl Vm {
                 // Assume by default Linux boot protocol is used and not PVH
                 let mut entry_point_addr: GuestAddress = entry_addr.kernel_load;
 
-                let boot_prot = if cfg!(feature = "pvh_boot") && entry_addr.pvh_entry_addr.is_some()
-                {
+                let boot_prot = if entry_addr.pvh_entry_addr.is_some() {
                     // entry_addr.pvh_entry_addr field is safe to unwrap here
                     entry_point_addr = entry_addr.pvh_entry_addr.unwrap();
                     BootProtocol::PvhBoot