#683 remove results folder and link to new repo

[valentinsulzer]

Description

Remove results folders and add some lines to READMEs to link to the new repo of results.
See new results repo here

Fixes #683

Type of change

Please add a line in the relevant section of CHANGELOG.md to document the change (include PR #) - note reverse order of PR #s. If necessary, also add to the list of breaking changes.

• New feature (non-breaking change which adds functionality)
• Optimization (back-end change that speeds up the code)
• Bug fix (non-breaking change which fixes an issue)

Key checklist:

• No style issues: $ flake8
• All tests pass: $ python run-tests.py --unit
• The documentation builds: $ cd docs and then $ make clean; make html

You can run all three at once, using $ python run-tests.py --quick.

Further checks:

• Code is commented, particularly in hard-to-understand areas
• Tests added that prove fix is effective or that feature works

[codecov]

Codecov Report

Merging #761 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #761   +/-   ##
=======================================
  Coverage   98.38%   98.38%           
=======================================
  Files         176      176           
  Lines        9678     9678           
=======================================
  Hits         9522     9522           
  Misses        156      156

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[rtimms]

looks good to me, thanks

[rtimms]

in the new results repo the line "- Specify (in your README) the PyBaMM version number or commit hash with which your repository works" looks to be written as code rather than text