[XPU] Enable reduction optimization by default

Add reduction optimization pass to the pipeline by default.

Author: victor-eds

third_party/intel/backend/compiler.py

@@ -252,9 +252,7 @@ def make_ttgir(mod, metadata, opt, properties):
         passes.common.add_cse(pm)
         passes.ttgpuir.add_prefetch(pm)
         passes.ttgpuir.add_optimize_dot_operands(pm, True)
-        if os.getenv("TRITON_INTEL_OPTIMIZE_REDUCTION_LOCALITY", "0") == "1":
-            intel.passes.ttgpuir.add_optimize_reduction_locality(pm)
-            intel.passes.ttgpuir.add_optimize_elementwise_parallelism(pm)
+        intel.passes.ttgpuir.add_optimize_reduction_locality(pm)
         intel.passes.ttgpuir.add_remove_layout_conversions(pm)
         intel.passes.ttgpuir.add_reduce_data_duplication(pm)
         passes.ttgpuir.add_reorder_instructions(pm)