Reverts 627fe8e

PiperOrigin-RevId: 715423832

Author: loislo

xla/debug_options_flags.cc

@@ -232,7 +232,7 @@ DebugOptions DefaultDebugOptionsIgnoringFlags() {
   opts.set_xla_gpu_exhaustive_tiling_search(false);
 
   opts.set_xla_gpu_experimental_enable_triton_heroless_priority_fusion(false);
-  opts.set_xla_gpu_experimental_enable_triton_i4_rewrites(true);
+  opts.set_xla_gpu_experimental_enable_triton_i4_rewrites(false);
 
   opts.set_xla_gpu_auto_spmd_partitioning_memory_budget_gb(0);
   opts.set_xla_gpu_auto_spmd_partitioning_memory_budget_ratio(1.1);