crypto: qat - remove access to parity register for QAT GEN4

The firmware already handles parity errors reported by the accelerators
by clearing them through the corresponding SSMSOFTERRORPARITY register.
To ensure consistent behavior and prevent race conditions between the
driver and firmware, remove the logic that checks the SSMSOFTERRORPARITY
registers.

Additionally, change the return type of the function
adf_handle_rf_parr_err() to void, as it consistently returns false.
Parity errors are recoverable and do not necessitate a device reset.

Fixes: 895f7d53 ("crypto: qat - add handling of errors from ERRSOU2 for QAT GEN4")
Signed-off-by: Bairavi Alagappan <bairavix.alagappan@intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>