Remove spurious duplicate line of code

This CL removes a duplicate line of code which appears to have
been intended for removal during a cleanup, but wasn't.  It would
not have affected correctness, rather it uselessly performed the
same store twice.

Bug originally reported by M Mendell.

Change-Id: If4333a29f32b6bdb944b67aa560d856611041ff6
diff --git a/compiler/dex/quick/gen_invoke.cc b/compiler/dex/quick/gen_invoke.cc
index 424cdd6..1907012 100644
--- a/compiler/dex/quick/gen_invoke.cc
+++ b/compiler/dex/quick/gen_invoke.cc
@@ -687,7 +687,6 @@
                                     vtable_idx, direct_code, direct_method, type);
       }
       StoreBaseDisp(TargetReg(kSp), (next_use + 1) * 4, reg, kWord);
-      StoreBaseDisp(TargetReg(kSp), 16 /* (3+1)*4 */, reg, kWord);
       call_state = next_call_insn(cu_, info, call_state, target_method, vtable_idx,
                                   direct_code, direct_method, type);
       next_use++;