remove extra += who.o

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
diff --git a/coreutils/Kbuild.src b/coreutils/Kbuild.src
index 0681e44..53d88b3 100644
--- a/coreutils/Kbuild.src
+++ b/coreutils/Kbuild.src
@@ -82,6 +82,5 @@
 lib-$(CONFIG_UUDECODE)  += uudecode.o
 lib-$(CONFIG_UUENCODE)  += uuencode.o
 lib-$(CONFIG_WC)        += wc.o
-lib-$(CONFIG_WHO)       += who.o
 lib-$(CONFIG_WHOAMI)    += whoami.o
 lib-$(CONFIG_YES)       += yes.o