chore: drop pinning of python 3.12 (#7389)

Update install.sh

Signed-off-by: Ettore Di Giacinto <mudler@users.noreply.github.com>

Author: mudler

backend/python/diffusers/install.sh

@@ -16,11 +16,4 @@ if [ "x${BUILD_PROFILE}" == "xintel" ]; then
     EXTRA_PIP_INSTALL_FLAGS+=" --upgrade --index-strategy=unsafe-first-match"
 fi
 
-# Use python 3.12 for l4t
-if [ "x${BUILD_PROFILE}" == "xl4t" ]; then
-  PYTHON_VERSION="3.12"
-  PYTHON_PATCH="12"
-  PY_STANDALONE_TAG="20251120"
-fi
-
 installRequirements