Fix documentation

[timmens]

In this PR, we fix the API section of the documentation.

What happened?

In our documentation, we use mock imports. From the sphinx docs:

This is useful when some external dependencies are not met at build time and break the building process. You may only specify the root package of the dependencies themselves and omit the sub-modules:

However, mocked modules cannot be used during build time. This was not a problem until a few weeks ago when plotly started checking pandas version numbers (mocked for our documentation), which requires the execution of pandas code --- namely pandas.__version__ --- during build time. My unawareness of what was actually happening led me to restrict the plotly version (see #480).

In #482, I added code to estimagic that also checked the pandas version numbers, leading to the same problem as before.

Fix

Remove pandas from the list of mock imports.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 92.98%. Comparing base (656319d) to head (f77fa22).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #487   +/-   ##
=======================================
  Coverage   92.98%   92.98%           
=======================================
  Files         194      194           
  Lines       14649    14649           
=======================================
  Hits        13621    13621           
  Misses       1028     1028           

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[hmgaudecker]

Helpful write-up of what happened!