[REMOVE] Technical Manager Role from Leadership Page

[kjaymiller]

Our Technical Manager role have been retired as of 16 Sept

The technical management role needs to be removed from the page.

[kjaymiller]

cc: @TimOsahenru I'll make changes for #458

[Kabasitad]

#465

[Kabasitad]

removed the technical manager role

[TimOsahenru]

@Kabasitad Please read through this https://github.com/BlackPythonDevs/blackpythondevs.github.io/blob/gh-pages/CONTRIBUTING.md and mind you this issue has been resolved in this PR #458