[issue2551302] Remove support for sqlite version 1 from back_sqlite.py

New submission from John Rouillard:

This includes:

 ...
 import sqlite as final fallback on import error

 if sqlite_version in (2, 3):
    arg = '?'
 else:
    arg = '%s'


 Removing self.sqlite_busy_handler and it's invocation

look for other checks against sqlite_version and eliminate sqlite 1 cases.
Also consider removing tests that match (2, 3) and just running the code
without an if test.

This cleans up untested code that is not usable these days.

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components: Database
keywords: Effort-Low
messages: 7864
nosy: rouilj
severity: minor
status: new
title: Remove support for sqlite version 1 from back_sqlite.py
type: behavior

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