TBR: veyron/lib/modules/core: remove empty file.

Change-Id: I3bf0cc9c2c866e0b00036b3a112ea9438844ecd7
diff --git a/lib/modules/core/flags.go b/lib/modules/core/flags.go
deleted file mode 100644
index 9a8bc95..0000000
--- a/lib/modules/core/flags.go
+++ /dev/null
@@ -1 +0,0 @@
-package core