Revert "Add simple CPU offloading support" (#2252)

We'll re-add the commit to correctly ack Kaichao's authorship

python/sglang/srt/server_args.py

@@ -62,7 +62,6 @@ class ServerArgs:
     max_prefill_tokens: int = 16384
     schedule_policy: str = "lpm"
     schedule_conservativeness: float = 1.0
-    cpu_offload_gb: int = 0
 
     # Other runtime options
     tp_size: int = 1
@@ -368,13 +367,6 @@ class ServerArgs:
             help="How conservative the schedule policy is. A larger value means more conservative scheduling. Use a larger value if you see requests being retracted frequently.",
         )
 
-        parser.add_argument(
-            "--cpu-offload-gb",
-            type=int,
-            default=ServerArgs.cpu_offload_gb,
-            help="How many GBs of RAM to reserve for CPU offloading",
-        )
-
         # Other runtime options
         parser.add_argument(
             "--tensor-parallel-size",