Remove redundant ART Megatron source pins

Author: Kovbo

pyproject.toml

@@ -226,6 +226,3 @@ dev = [
 
 [tool.uv.sources]
 panza = { git = "https://github.com/corbt/panza.git" }
-apex = { git = "https://github.com/NVIDIA/apex.git", branch = "25.09" }
-megatron-bridge = { git = "https://github.com/NVIDIA-NeMo/Megatron-Bridge.git", rev = "75f2c5ad4afb702b57b4781a00f5291a66bcf183" }
-transformer-engine-torch = { git = "https://github.com/NVIDIA/TransformerEngine.git", tag = "v2.11", subdirectory = "transformer_engine/pytorch" }