tools: PCI: Remove unused BILLION macro

JIRA: https://issues.redhat.com/browse/RHEL-67693
Upstream Status: d0aac66

commit d0aac66
Author: zhang jiao <[email protected]>
Date:   Wed Sep 11 14:04:01 2024 +0800

    tools: PCI: Remove unused BILLION macro

    The macro BILLION is never referenced in the code.  Remove it.

    Link: https://lore.kernel.org/r/[email protected]
    Signed-off-by: zhang jiao <[email protected]>
    Signed-off-by: Bjorn Helgaas <[email protected]>
    Signed-off-by: Krzysztof Wilczyński <[email protected]>

Signed-off-by: Myron Stowe <[email protected]>

Author: Myron Stowe

tools/pci/pcitest.c

@@ -16,8 +16,6 @@
 
 #include <linux/pcitest.h>
 
-#define BILLION 1E9
-
 static char *result[] = { "NOT OKAY", "OKAY" };
 static char *irq[] = { "LEGACY", "MSI", "MSI-X" };