Address some issues related to Python version

This series remove compatibility with Python 2.x from scripts that have some backward compatibility logic on it. The rationale is that, since commit 627395716cc3 ("docs: document python version used for compilation"), the minimal Python version was set to 3.x. Also, Python 2.x is EOL since Jan, 2020.

Patch 1: fix a script that was compatible only with Python 2.x; Patches 2-4: remove backward-compat code;
Patches 5-6 solves forward-compat with modern Python which warns about using
raw strings without using "r" format.

Mauro Carvalho Chehab (6):
docs: trace: decode_msr.py: make it compatible with python 3
tools: perf: exported-sql-viewer: drop support for Python 2
tools: perf: tools: perf: exported-sql-viewer: drop support for Python

    2

tools: perf: task-analyzer: drop support for Python 2
tools: selftests/bpf: test_bpftool_synctypes: escape raw symbols
comedi: convert_csv_to_c.py: use r-string for a regex expression

 Documentation/trace/postprocess/decode_msr.py |  2 +-
 .../ni_routing/tools/convert_csv_to_c.py      |  2 +-
 .../scripts/python/exported-sql-viewer.py     |  5 ++--
 tools/perf/scripts/python/task-analyzer.py    | 23 ++++----------
 tools/perf/tests/shell/lib/attr.py            |  6 +---
 .../selftests/bpf/test_bpftool_synctypes.py   | 30 +++++++++----------
 6 files changed, 25 insertions(+), 43 deletions(-)

2.48.1