[lld] [llvm] [lld] Remove uses of %T from tests (PR #150740)

[Aiden Grossman via llvm-commits]

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@@ -1,5 +1,6 @@
-# RUN: cp %p/Inputs/hello64.obj %T
-# RUN: cp %p/Inputs/std64.lib %T
+# RUN: mkdir -p %t.dir
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boomanaiden154 wrote:

I believe we could just `mkdir -p %t`. Using a `%t.<suffix>` is the typical convention though from what I've seen and matches everything else in the test.

https://github.com/llvm/llvm-project/pull/150740