pip.md in licensed-3.6.0

- old
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@@ -1,13 +1,8 @@
 # Pip
 
 The pip source uses `pip` CLI commands to enumerate dependencies and properties. It is expected that `pip` is available in the `virtual_env_dir` specific directory before running `licensed`.
 
-Your repository root should also contain a `requirements.txt` file which contains all the packages and dependences that are needed. You can generate one with `pip` using the command:
-```
-pip freeze > requirements.txt
-```
-
 A `virtualenv` directory is required before running `licensed`. You can setup a `virtualenv` by running the command:
 ```
 virtualenv <your_venv_dir>
 ```
 _note_: `<your_venv_dir>` path should be relative to the repository root or can be specified as an absolute path.