toybox: microcom is not present in the lineage 14.1 source.

Change-Id: Ic5983498caf9a082d23fdfbc3683e77697fcaf64
diff --git a/toybox/Android.mk b/toybox/Android.mk
index 8ba8daf..8c3d7c5 100644
--- a/toybox/Android.mk
+++ b/toybox/Android.mk
@@ -247,7 +247,6 @@
     toys/android/sendevent.c \
     toys/android/start.c \
     toys/net/ifconfig.c \
-    toys/net/microcom.c \
     toys/net/netcat.c \
     toys/net/netstat.c \
     toys/net/rfkill.c \