Remove duplicate fdevent.cpp entry

Fixes the following warnings:

build/core/binary.mk:894: warning: overriding commands for target
`out/target/product/bullhead/obj/STATIC_LIBRARIES/libadbd_intermediates/fdevent.o'
build/core/binary.mk:894: warning: ignoring old commands for target
`out/target/product/bullhead/obj/STATIC_LIBRARIES/libadbd_intermediates/fdevent.o'
build/core/binary.mk:894: warning: overriding commands for target
`out/target/product/bullhead/obj_arm/STATIC_LIBRARIES/libadbd_intermediates/fdevent.o'
build/core/binary.mk:894: warning: ignoring old commands for target
`out/target/product/bullhead/obj_arm/STATIC_LIBRARIES/libadbd_intermediates/fdevent.o'

Change-Id: Id4b13574e568284cefbc3a763d40843e73ddbd3d
diff --git a/Android.mk b/Android.mk
index e0997ea..4777883 100644
--- a/Android.mk
+++ b/Android.mk
@@ -99,7 +99,6 @@
 LOCAL_SRC_FILES := \
     $(LIBADB_SRC_FILES) \
     adb_auth_client.cpp \
-    fdevent.cpp \
     jdwp_service.cpp \
     usb_linux_client.cpp \