Models missing 'requirements.txt' files

Models lit_llama, lit_llama_generate and lit_llama_lora are failing with ERROR: Could not open requirements file: [Errno 2] No such file or directory: 'requirements.txt' during the installation process as they are missing their requirements.txt files.

Full error with command:

$ python3 benchmark/install.py lit_llama_lora --canary -v
checking packages numpy, torch, torchvision, torchaudio are installed, generating constaints...OK
running setup for /home/user/benchmark/torchbenchmark/canary_models/lit_llama_lora...ERROR: Could not open requirements file: [Errno 2] No such file or directory: 'requirements.txt'
Traceback (most recent call last):
  File "/home/user/benchmark/torchbenchmark/canary_models/lit_llama_lora/install.py", line 4, in <module>
    install_lit_llama()
  File "/home/user/benchmark/torchbenchmark/util/framework/lit_llama.py", line 57, in install_lit_llama
    pip_install_requirements()
  File "/home/user/benchmark/utils/python_utils.py", line 47, in pip_install_requirements
    subprocess.check_call(
  File "/usr/lib/python3.10/subprocess.py", line 369, in check_call
    raise CalledProcessError(retcode, cmd)
subprocess.CalledProcessError: Command '['bin/python3', '-m', 'pip', 'install', '-r', 'requirements.txt', '-c', '/home/user/benchmark/build/constraints.txt']' returned non-zero exit status 1.
FAIL
Error for /home/user/benchmark/torchbenchmark/canary_models/lit_llama_lora:
---------------------------------------------------------------------------
None
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Traceback (most recent call last):
  File "/home/user/benchmark/install.py", line 120, in <module>
    raise RuntimeError("Failed to complete setup")
RuntimeError: Failed to complete setup

Check the setup paths for lit_llama, lit_llama_generate, and lit_llama_lora under canary_models, along with their install.py files and util/framework/lit_llama.py. Reproduce the failure with python3 benchmark/install.py lit_llama_lora --canary -v, then verify that installation completes successfully for all three models.