Fix: Removed get_experiment_by_name as not required

[ketangangal]

What changes are proposed in this pull request?

Fixes #5808

URL(s) with the issue:
https://mlflow.org/docs/latest/_modules/mlflow/tracking/fluent.html#set_experiment
https://github.com/mlflow/mlflow/blob/master/mlflow/tracking/fluent.py

Change documentation / code example from

import mlflow
# Set an experiment name, which must be unique and case sensitive.
mlflow.set_experiment("Social NLP Experiments")
# Get Experiment Details
experiment = mlflow.get_experiment_by_name("Social NLP Experiments")
print("Experiment_id: {}".format(experiment.experiment_id))
print("Artifact Location: {}".format(experiment.artifact_location))
print("Tags: {}".format(experiment.tags))
print("Lifecycle_stage: {}".format(experiment.lifecycle_stage))

to

import mlflow
# Set an experiment name, which must be unique and case-sensitive.
experiment = mlflow.set_experiment("Social NLP Experiments")
# Get Experiment Details
print("Experiment_id: {}".format(experiment.experiment_id))
print("Artifact Location: {}".format(experiment.artifact_location))
print("Tags: {}".format(experiment.tags))
print("Lifecycle_stage: {}".format(experiment.lifecycle_stage))

[github-actions]

@ketangangal Thanks for the contribution! The DCO check failed. Please sign off your commits by following the instructions here: https://github.com/mlflow/mlflow/runs/6239934586. See https://github.com/mlflow/mlflow/blob/master/CONTRIBUTING.rst#sign-your-work for more details.

[harupy]

LGTM!