Revert "Add lld --no-rosegment flag to work with unwinder."

This reverts commit b18814e7a4.

Reason for revert: The originating bug is now fixed.

Test: make checkbuild
Change-Id: Iabcfbeed5977336fc27fb1ccbad269c1fa81ef6e

cc/config/global.go

@@ -87,9 +87,6 @@ var (
 
 	deviceGlobalLldflags = append(ClangFilterUnknownLldflags(deviceGlobalLdflags),
 		[]string{
-			// TODO(b/109657296): needs --no-rosegment until Android
-			// stack unwinder can handle the read-only segment.
-			"-Wl,--no-rosegment",
 			"-Wl,--pack-dyn-relocs=android+relr",
 			"-Wl,--use-android-relr-tags",
 			"-fuse-ld=lld",