[SPARK-46697][SQL][HIVE] Eliminate Hive configuration time variables conversion

[pan3793]

What changes were proposed in this pull request?

Eliminate the HiveUtils.formatTimeVarsForHiveClient

Why are the changes needed?

HiveUtils.formatTimeVarsForHiveClient was introduced to handle compatibility with Hive prior 0.14.0, as Spark 4.0 only supports Hive 2.0+, it's now unnecessary.

Hive 0.14.0 introduces timeout operations in HiveConf, and changes default values of a bunch
of time ConfVars by adding time suffixes (s, ms, and d etc.). This breaks backwards-
compatibility when users are trying to connecting to a Hive metastore of lower version,
because these options are expected to be integral values in lower versions of Hive.

Here we enumerate all time ConfVars and convert their values to numeric strings according
to their output time units.

Does this PR introduce any user-facing change?

No.

How was this patch tested?

Pass GA.

Was this patch authored or co-authored using generative AI tooling?

No.

[dongjoon-hyun]

+1, this looks reasonable to me.

[dongjoon-hyun]

Also, cc @LuciferYang

[HyukjinKwon]

Mind retriggering https://github.com/pan3793/spark/actions/runs/7501484603/job/20422355010?

[pan3793]

@HyukjinKwon CI is green now

[dongjoon-hyun]

Merged to master. Thank you, @pan3793 and all.

[LuciferYang]

late LGTM ~