prereqs: remove python requirement for tempita

Change-Id: I93608d5e6685f592e41c67053c632732b4c8cb92

python-requirements.txt

diff --git a/python-requirements.txt b/python-requirements.txt
index b4e5bfa..7bcbbbe 100644
--- a/python-requirements.txt
+++ b/python-requirements.txt
@@ -34,7 +34,6 @@
 scipy
 sel4-deps
 setuptools
-tempita
 # TODO(lundong): not pin nightly after TOSA features are in release ver.
 tf-nightly==2.14.0.dev20230519
 wget