Installd: Clean up installd

Remove unnecessary includes.

Bug: 36336122
Test: m
Test: Device boots
Test: Can install apps
Change-Id: Iebbe049221d650667385efeac972956269bd53c2
diff --git a/cmds/installd/dexopt.cpp b/cmds/installd/dexopt.cpp
index 5bb2ce7..f7e8d13 100644
--- a/cmds/installd/dexopt.cpp
+++ b/cmds/installd/dexopt.cpp
@@ -1564,7 +1564,7 @@
             ALOGV("DexInv: --- END '%s' (success) ---\n", dex_path);
         } else {
             ALOGE("DexInv: --- END '%s' --- status=0x%04x, process failed\n", dex_path, res);
-            return -1;
+            return res;
         }
     }