Clean up the <netinet/ether.h> implementation.

Test: treehugger
Change-Id: Ifd8bf344583b74737a05b80e30373ab7bef94f8d
diff --git a/libc/Android.bp b/libc/Android.bp
index 071f309..8a88a0e 100644
--- a/libc/Android.bp
+++ b/libc/Android.bp
@@ -819,8 +819,6 @@
         "bionic/dup.cpp",
         "bionic/environ.cpp",
         "bionic/error.cpp",
-        "bionic/ether_aton.c",
-        "bionic/ether_ntoa.c",
         "bionic/eventfd.cpp",
         "bionic/exec.cpp",
         "bionic/execinfo.cpp",
@@ -880,8 +878,9 @@
         "bionic/mknod.cpp",
         "bionic/mntent.cpp",
         "bionic/mremap.cpp",
-        "bionic/net_if.cpp",
         "bionic/netdb.cpp",
+        "bionic/net_if.cpp",
+        "bionic/netinet_ether.cpp",
         "bionic/netinet_in.cpp",
         "bionic/nl_types.cpp",
         "bionic/open.cpp",