Update requirements.txt

requirements.txt

@@ -1,34 +1,2 @@
-# requires python3.6 or higher
-acstools
-astropy
-astroquery
-calcos
-ccdproc
-costools
-crds
-drizzlepac
-ginga
-ipython
-jupyterlab
-matplotlib
-numpy
-numpy 
-pandas
-photutils
-pyregion
-refstis
-regions
-scipy
-skimage
-specutils
-stis_cti
-stistools
-stsci.image
-stsci.imagestats
-stsci.skypac
-stsci.stimage
-stsci.tools
-stsynphot
-stwcs
-synphot
-wfc3tools
+DEPRICATED
+use requirements.txt files located in the notebooks directory.