Removes obsolete python scripts

- pyscripts/double.py
  - Script attempting to double resolution: never used, and unlikely to work as is
- pyscripts/osfun.py
  - wraps a number of os commands in terminal names: never used, can be one-lined in scripts
- pyscripts/paws.py
  - Stops script executing using input. Not needed, not pythonic, and can be one-lined if deemded necessary. Also written in Python 2 (?!)
- pyscripts/rdcontdt.py
  - Obsolete time-evolving script. Superseded by uedge.rundt
- pyscripts/rdinitdt.py
  - Obsolete setup script for obsolete script rdcontdt
- pyscripts/ruthere.py
  - Obsolete script checking for user-interrupt only used by obsolete script rdcontdt
- pyscripts/uexcec.py
  - Obsolete script that (maybe) tries to import uedge packages in a convoluted way? Only used in obsolete script rdcontdt