pci: drop a useless check

The end_addr is a 64-bit value which cannot possibly be larger than
u64::max_value().

Signed-off-by: Wei Liu <liuwe@microsoft.com>

pci/src/configuration.rs

@@ -757,10 +757,6 @@ impl PciConfiguration {
                     return Err(Error::BarInvalid64(bar_idx));
                 }
 
-                if end_addr > u64::max_value() {
-                    return Err(Error::BarAddressInvalid(config.addr, config.size));
-                }
-
                 if self.bars[bar_idx + 1].used {
                     return Err(Error::BarInUse64(bar_idx));
                 }