[Build] Revert triton_kernels requirements (vllm-project#27659)

Author: varun-sundar-rabindranath

requirements/cuda.txt

@@ -13,5 +13,3 @@ torchvision==0.24.0 # Required for phi3v processor. See https://github.com/pytor
 # xformers==0.0.32.post1; platform_system == 'Linux' and platform_machine == 'x86_64' # Requires PyTorch >= 2.8
 # FlashInfer should be updated together with the Dockerfile
 flashinfer-python==0.4.1
-# Triton Kernels are needed for mxfp4 fused moe. (Should be updated alongside torch)
-triton_kernels @ git+https://github.com/triton-lang/triton.git@v3.5.0#subdirectory=python/triton_kernels