[llvm] [lit] Add type hints to builtin_commands (PR #201497)

[via llvm-commits]

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@@ -2,17 +2,18 @@
 import subprocess
 import resource
 import os
+from typing import List, NoReturn, Tuple
 
-ULIMIT_ENV_VAR_PREFIX = "LIT_INTERNAL_ULIMIT_"
+ULIMIT_ENV_VAR_PREFIX: str = "LIT_INTERNAL_ULIMIT_"
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prasoon054 wrote:

You're right, these are redundant. I'll remove the annotations on constants and inferrable locals, keeping only the empty-container locals (`child_trees`, `filelines`).

https://github.com/llvm/llvm-project/pull/201497