remove matB & matB_acc block_size_x constrain for better simd_lane utilization

[zhewang1-intc]

Type of Change

feature or bug fix or documentation or others API changed or not

Description

detail description Issues: xxx

Expected Behavior & Potential Risk

the expected behavior that triggered by this PR

How has this PR been tested?

how to reproduce the test (including hardware information)

Dependency Change?

any library dependency introduced or removed