Revert "Support debug info in dexmerge."

This reverts commit 89b53f727b579850a777a99b822aab1d31093db0.

Applied in duplicate

Conflicts:
	dx/src/com/android/dx/merge/DexMerger.java

Change-Id: Ib43ae391be9e48b308d3d55516cd183936891c63