session: remove useless parser object in SessionHandle of bindinfo package

[winkyao]

As the title said.

What problem does this PR solve?

remove useless parser object in SessionHandle. If need to use parser object in bindinfo in the future, we should use sessionPool to get parser object than create a new one. just like what

tidb/session/session.go

Line 1547 in f8a6bde

p := parserPool.Get().(*parser.Parser)

does.

What is changed and how it works?

Check List

Tests

• Manual test (add detailed scripts or steps below)

just delete useless code, use make to check.

Side effects

no

Release note

None

[ti-chi-bot]

[REVIEW NOTIFICATION]

This pull request has been approved by:

• crazycs520
• hawkingrei

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[winkyao]

/run-mysql-test

[winkyao]

/run-all-tests

[hawkingrei]

/run-mysql-test

[crazycs520]

/merge

[ti-chi-bot]

This pull request has been accepted and is ready to merge.

Commit hash: a8dfda7

[hawkingrei]

/run-mysql-test tidb-test=pr/2026

[crazycs520]

/run-mysql-test tidb-test=pr/2026

[sre-bot]

TiDB MergeCI notify

🔴 Bad News! [2] CI still failing after this pr merged.
These failed integration tests don't seem to be introduced by the current PR.

CI Name	Result	Duration	Compare with Parent commit
idc-jenkins-ci-tidb/integration-common-test	🔴 failed 8, success 9, total 17	21 min	Existing failure
idc-jenkins-ci-tidb/common-test	🔴 failed 1, success 10, total 11	9 min 44 sec	Existing failure
idc-jenkins-ci/integration-cdc-test	🟢 all 40 tests passed	22 min	Existing passed
idc-jenkins-ci-tidb/sqllogic-test-2	🟢 all 28 tests passed	6 min 58 sec	Existing passed
idc-jenkins-ci-tidb/sqllogic-test-1	🟢 all 26 tests passed	6 min 41 sec	Existing passed
idc-jenkins-ci-tidb/mybatis-test	🟢 all 1 tests passed	6 min 35 sec	Existing passed
idc-jenkins-ci-tidb/tics-test	🟢 all 1 tests passed	5 min 58 sec	Existing passed
idc-jenkins-ci-tidb/integration-ddl-test	🟢 all 6 tests passed	4 min 53 sec	Existing passed
idc-jenkins-ci-tidb/integration-compatibility-test	🟢 all 1 tests passed	3 min 1 sec	Existing passed
idc-jenkins-ci-tidb/plugin-test	🟢 build success, plugin test success	4min	Existing passed