Revert "Reapply "Use bazel's python in run-bazel.sh""

It _might_ break caching

This reverts commit 1892845.

Change-Id: Ia84541f5108a6b3a850e17c258d7bc29cf862ac2

Author: TimotheusBachinger

scripts/run-bazel.sh

@@ -36,7 +36,7 @@ EXECUTION_LOG_FILE_NAME="${ROOT_DIR}/bazel_execution_log-${TARGET_S1}.json"
 # explicitly create, and later `eval` since run directly with `eval` this script
 # would not abort on error
 BUILD_ENVIRONMENT="$(
-    "${ROOT_DIR}"/scripts/run-uvenv python3 \
+    python3 \
         "${ROOT_DIR}"/scripts/create_build_environment_variables.py \
         "eval:os-release-name:cat /etc/os-release | grep PRETTY | cut -d '\"' -f2" \
         "pathhash:/usr/lib/x86_64-linux-gnu/libc.so" \