[Quantization][Deprecation] Remove RTN (vllm-project#32697)

Signed-off-by: Robert Shaw <robshaw@redhat.com>
Co-authored-by: Robert Shaw <robshaw@redhat.com>
Signed-off-by: 陈建华 <1647430658@qq.com>

Author: 2 people

tests/quantization/test_rtn.py

@@ -31,7 +31,6 @@
     "quark",
     "moe_wna16",
     "torchao",
-    "rtn",
     "inc",
     "mxfp4",
     "petit_nvfp4",
@@ -49,7 +48,6 @@
     "gptq_bitblas",
     "experts_int8",
     "ipex",
-    "rtn",
     "petit_nvfp4",
 ]
 
@@ -138,7 +136,6 @@ def get_quantization_config(quantization: str) -> type[QuantizationConfig]:
     from .mxfp4 import Mxfp4Config
     from .petit import PetitNvFp4Config
     from .ptpc_fp8 import PTPCFp8Config
-    from .rtn import RTNConfig
     from .torchao import TorchAOConfig
 
     method_to_config: dict[str, type[QuantizationConfig]] = {
@@ -163,7 +160,6 @@ def get_quantization_config(quantization: str) -> type[QuantizationConfig]:
         "quark": QuarkConfig,
         "moe_wna16": MoeWNA16Config,
         "torchao": TorchAOConfig,
-        "rtn": RTNConfig,
         "auto-round": INCConfig,
         "inc": INCConfig,
         "mxfp4": Mxfp4Config,