Remove PyText test cases and code. (#1550)

Summary:
Pull Request resolved: #1550

`PyText` has been deprecated since Nov 2022 in favor of torchtext, and test cases have been skip since 2021.

Reviewed By: sarahtranfb

Differential Revision: D73673337

fbshipit-source-id: 8c6bf657ea1478a79716fac0b789aa7e5d7a4f0a

Author: cyrjano

captum/attr/_models/pytext.py

@@ -15,10 +15,6 @@ while getopts 'nf' flag; do
 #conda update -y -n base -c defaults conda
 conda update -q --all --yes
 
-# install other frameworks if asked for and make sure this is before pytorch
-if [[ $FRAMEWORKS == true ]]; then
-  pip install -q pytext-nlp
-fi
 
 # install CPU version for much smaller download
 conda install -q -y pytorch cpuonly -c pytorch

scripts/install_via_conda.sh

@@ -46,11 +46,6 @@ pip install --upgrade pip --progress-bar off
 pip install -e .[dev] --progress-bar off
 BUILD_INSIGHTS=1 python setup.py develop
 
-# install other frameworks if asked for and make sure this is before pytorch
-if [[ $FRAMEWORKS == true ]]; then
-  pip install pytext-nlp --progress-bar off
-fi
-
 # install pytorch nightly if asked for
 if [[ $PYTORCH_NIGHTLY == true ]]; then
   pip install --upgrade --pre torch -f https://download.pytorch.org/whl/nightly/cpu/torch_nightly.html --progress-bar off