Modernize the test a bit

Remove out of date comment.
Pass .ll files to llvm-link.

llvm-svn: 254210

llvm/test/Linker/2003-04-23-LinkOnceLost.ll

@@ -1,10 +1,5 @@
-; This fails because the linker renames the non-opaque type not the opaque 
-; one...
-
-; RUN: echo " define linkonce void @foo() { ret void } " | \
-; RUN:   llvm-as -o %t.2.bc
-; RUN: llvm-as %s -o %t.1.bc
-; RUN: llvm-link %t.1.bc %t.2.bc -S | FileCheck %s
+; RUN: echo " define linkonce void @foo() { ret void } " > %t.ll
+; RUN: llvm-link %s %t.ll -S | FileCheck %s
 ; CHECK: linkonce{{.*}}foo
 
 declare void @foo()