Remove outdated docstring from test_montecarlo.py (#2382)

Remove outdated docstring

tardis/montecarlo/tests/test_montecarlo.py

@@ -1,49 +1,3 @@
-"""
-Unit tests for methods in `tardis/montecarlo/src/cmontecarlo.c`.
-* `ctypes` library is used to wrap C methods and expose them to python.
-
-
-Probable Reasons for Failing Tests:
------------------------------------
-
-1. Change made in C struct declarations:
-  - Reflect the changes done in C structs, into Python counterparts.
-  - Check **tardis/montecarlo/struct.py**.
-
-2. Return type of any method changed:
-  - Modify the `restype` parameter in the test method here.
-  - For example:
-        ```
-        clib.rpacket_doppler_factor.restype = c_double
-        ```
-
-3. Underlying logic modified:
-  - Check whether the changes made in C method are logically correct.
-  - If the changes made were correct and necessary, update the corresponding
-    test case.
-
-
-General Test Design Procedure:
-------------------------------
-
-Please follow this design procedure while adding a new test:
-
-1. Parametrization as per desire of code coverage.
-  - C tests have different flows controlled by conditional statements.
-    Parameters checked in conditions can be provided in different testcases.
-  - Keep consistency with variable names as (in order):
-    - `packet_params`
-    - `model_params`
-    - `expected_params` (`expected` if only one value to be asserted.)
-  - Suggested variable names can be compromised if readability of the test
-    increases.
-
-2. Test Method body:
-  - Keep name as `test_` + `(name of C method)`.
-  - Refer to method `test_rpacket_doppler_factor` below for description.
-"""
-
-
 import os
 import pytest
 import numpy as np