ART: Fix "unused parameters"

GCC 4.8 decides that parameters for functions implemented with
"= default" are unused. This currently only impacts x86, but remove
the parameter names anyways.

Change-Id: I01865faa81af68c4c0e0b1cb1fb19e88ef548769
diff --git a/cmdline/cmdline_parser.h b/cmdline/cmdline_parser.h
index a555356..e4af4f9 100644
--- a/cmdline/cmdline_parser.h
+++ b/cmdline/cmdline_parser.h
@@ -490,9 +490,9 @@
   }
 
   // Ensure we have a default move constructor.
-  CmdlineParser(CmdlineParser&& other) = default;
+  CmdlineParser(CmdlineParser&&) = default;
   // Ensure we have a default move assignment operator.
-  CmdlineParser& operator=(CmdlineParser&& other) = default;
+  CmdlineParser& operator=(CmdlineParser&&) = default;
 
  private:
   friend struct Builder;