Update recipe for Segtools 1.2.1 for both Python 2 and Python 3 (#9073)
Update recipe for Segtools 1.2.1 for both Python 2 and Python 3 (#9073)

* Update recipe for Segtools 1.2 for both Python 2 and Python 3

* Remove Genomedata from segtools conda build requirement

* Add Python 2 preprocessing selector on Genomedata for Segtools 1.2

* Add textinput to runtime requirement regardless of Genomedata dependency to Segtools 1.2

* Update Segtools to version 1.2.1

* Remove use of fn from segtools recipe

* Remove preserve egg directories from segtools recipe

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