Update image classifier example

* Commit pre-trained model

Author: koverholt

.gitignore

@@ -37,10 +37,8 @@ rsconnect/
 
 # Temporary files
 .DS_Store
-.model
 __pycache__
 .ipynb_checkpoints
 *.html
 rmarkdown-notebook/flights.csv
-image-classifier/model/
 sentiment-analysis/model/

image-classifier/app.R

@@ -3,9 +3,6 @@ library(reticulate)  # Used to call Tensorflow Python script
 library(shiny)
 library(shinycssloaders)
 
-# Set PyTorch model directory
-Sys.setenv(TORCH_MODEL_ZOO = "./model")
-
 # Load source of Python image classifier script
 source_python('image-classifier.py')