code_relocation: fix ruff UP037 warnings

In Python, type annotations can be quoted to avoid forward references.

However, if "from __future__ import annotations" is present, Python will
always evaluate type annotations in a deferred manner, making the quotes
unnecessary.

The ruff python linter produces UP037 warnings to indicate cases where
quoting of type annotations can be removed. This patch corrects the
warnings.

Signed-off-by: Joel Holdsworth <jholdsworth@nvidia.com>