remove or supply hard-coded shapefile used for conformity analysis

[bricegnichols]

https://github.com/psrc/soundcast/blob/asim_develop/scripts/summarize/RTP_summary/nb/RTP_conformity_analysis.ipynb

Conformity shapefile in Pierce County. We should just run this as an option notebook at PSRC and otherwise exclude it:

Load the PM2.5 conformity shapefile

gdf_pm25 = gpd.read_file(r'X:\Trans\TIP\AIRQUAL\Conformity\pm25_harn.shp')
gdf_pm25 = gdf_pm25.to_crs(2285)

[bricegnichols]

Set as optional notebook to only run if needed at PSRC: c688ad1