Simplify the test. NFC.

Since the main file was empty, we can just copy the content of the Input file
into it.

llvm-svn: 223666

llvm/test/Linker/Inputs/comdat9.ll

@@ -1,5 +0,0 @@
-$c = comdat any
-@a = alias void ()* @f
-define internal void @f() comdat $c {
-  ret void
-}

llvm/test/Linker/comdat9.ll

@@ -1,4 +1,10 @@
-; RUN: llvm-link %s %p/Inputs/comdat9.ll -S -o - | FileCheck %s
+; RUN: llvm-link %s -S -o - | FileCheck %s
+
+$c = comdat any
+@a = alias void ()* @f
+define internal void @f() comdat $c {
+  ret void
+}
 
 ; CHECK: $c = comdat any
 ; CHECK: @a = alias void ()* @f