remove CI for FSDP2 + fp8 all-gather (#470)

per discussion from
#469 (comment)

we are planning BC breaking changes in float8_experimental. remove CI
for FSDP2 + fp8 all-gather for now. When public APIs are finalized, we
can discuss bringing it back

Author: weifengpy

test_runner.py

@@ -273,50 +273,6 @@ def build_test_list():
             "fsdp2_mem_tracker",
             ngpu=4,
         ),
-        OverrideDefinitions(
-            [
-                [
-                    "--training.enable_float8_linear",
-                ]
-            ],
-            "FSDP2 with original dtype",
-            "float8_fsdp2_orig_all_gather",
-            ngpu=4,
-        ),
-        OverrideDefinitions(
-            [
-                [
-                    "--training.enable_float8_linear",
-                    "--training.enable_fsdp_float8_all_gather",
-                ]
-            ],
-            "FSDP2 with float8 all-gather",
-            "fsdp2_float8_all_gather",
-            ngpu=4,
-        ),
-        OverrideDefinitions(
-            [
-                [
-                    "--training.enable_float8_linear",
-                    "--training.enable_fsdp_float8_all_gather",
-                    "--training.precompute_float8_dynamic_scale_for_fsdp",
-                ]
-            ],
-            "FSDP2 with float8 all-gather and precomputed dynamic scales",
-            "fsdp2_float8_all_gather_precompute_dynamic_scales",
-        ),
-        OverrideDefinitions(
-            [
-                [
-                    "--training.enable_float8_linear",
-                    "--training.enable_fsdp_float8_all_gather",
-                    "--training.precompute_float8_dynamic_scale_for_fsdp",
-                    "--training.compile",
-                ]
-            ],
-            "FSDP2 with float8 all-gather and precomputed dynamic scales",
-            "fsdp2_float8_all_gather_precompute_dynamic_scales_compile",
-        ),
         OverrideDefinitions(
             [
                 [