intel_adsp: ace: Remove redundant HPSRAM init from D3 restore

Remove hp_sram_init() call from boot_d3_restore() as it's redundant and
causes TLB access errors. The TLB driver's adsp_mm_restore_context()
already handles all HPSRAM power management and content restoration.

The removed code was attempting to zero memory regions that are
intentionally unmapped by the TLB driver for power optimization, causing
access to disabled TLB entries during D3→D0 transitions.

Additionally, hp_sram_init() powers up all memory banks while the TLB
restore function correctly enables only the banks that were actually
used, maintaining proper power optimization.

Current flow causes errors in simulation which revealed this incorrect
double initialization in test scenarios with minimal firmware
configurations.

Signed-off-by: Tomasz Leman <tomasz.m.leman@intel.com>