Unify flush task getter implementation of product and core helpers

Signed-off-by: Zbigniew Zdanowicz <zbigniew.zdanowicz@intel.com>

shared/source/xe_hpc_core/os_agnostic_hw_info_config_xe_hpc_core.inl

@@ -21,11 +21,6 @@ bool ProductHelperHw<gfxProduct>::isDcFlushAllowed() const {
     return false;
 }
 
-template <>
-bool ProductHelperHw<gfxProduct>::isFlushTaskAllowed() const {
-    return true;
-}
-
 template <>
 bool ProductHelperHw<gfxProduct>::isTimestampWaitSupportedForEvents() const {
     return true;

shared/source/xe_hpg_core/dg2/os_agnostic_hw_info_config_dg2.inl

@@ -181,11 +181,6 @@ uint32_t ProductHelperHw<gfxProduct>::computeMaxNeededSubSliceSpace(const Hardwa
     return maxSubSlice;
 }
 
-template <>
-bool ProductHelperHw<gfxProduct>::isFlushTaskAllowed() const {
-    return true;
-}
-
 template <>
 bool ProductHelperHw<gfxProduct>::programAllStateComputeCommandFields() const {
     return true;

shared/source/xe_hpg_core/mtl/os_agnostic_hw_info_config_mtl.inl

@@ -124,9 +124,4 @@ uint64_t ProductHelperHw<gfxProduct>::overridePatIndex(AllocationType allocation
     return patIndex;
 }
 
-template <>
-bool ProductHelperHw<gfxProduct>::isFlushTaskAllowed() const {
-    return false;
-}
-
 } // namespace NEO