Revert "Storages: Update the length of Block queue and the number of read threads (#8702)"

[JinheLin]

close #8703

Reverts #8708 because performance regression found in clustered-index daily test

Release note

None

[JaySon-Huang]

LGTM

[ti-chi-bot]

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2024-01-25 03:24:53.235045454 +0000 UTC m=+1017534.799343160: ☑️ agreed by JaySon-Huang.
• 2024-01-25 03:25:26.695945773 +0000 UTC m=+1017568.260243479: ☑️ agreed by Lloyd-Pottiger.

[JinheLin]

/run-all-tests

[JinheLin]

/run-integration-test

[JinheLin]

[2024-01-25T03:44:00.860Z] fullstack-test2/ddl/alter_exchange_partition.test: Running

[2024-01-25T03:45:22.546Z]   File: fullstack-test2/ddl/alter_exchange_partition.test

[2024-01-25T03:45:22.546Z]   Error line: 156

[2024-01-25T03:45:22.546Z]   Error: set @@tidb_enable_exchange_partition=1; alter table test.e exchange partition p0 with table test_new.e2

[2024-01-25T03:45:22.546Z]   Result:

[2024-01-25T03:45:22.546Z]     ERROR 1105 (HY000) at line 1: other error for mpp stream: From MPP<query:447258113766064129,task:1>: Poco::Exception. Code: 1000, e.code() = 2, e.displayText() = Exception: Receive TsoResponse failed, e.what() = Exception

[2024-01-25T03:45:22.546Z]   Expected:

[2024-01-25T03:45:22.546Z]     <nothing>