Revert "Disable lld for unrecognized --keep-unique flag."

This reverts commit d5d597f672ea36b8ea6a806e783abd87d9382b49.

Reason for revert: New lld now recognize --keep-unique
Bug: 77976998
Bug: 110833175

Change-Id: I734da95285e0a383e5f0de5bdf0042a11ccb74a8
diff --git a/runtime/Android.bp b/runtime/Android.bp
index f4b8697..7372056 100644
--- a/runtime/Android.bp
+++ b/runtime/Android.bp
@@ -240,9 +240,6 @@
         "entrypoints/quick/quick_trampoline_entrypoints.cc",
     ],
 
-    // b/77976998, clang lld does not recognize the --keep-unique flag.
-    use_clang_lld: false,
-
     arch: {
         arm: {
             srcs: [