Cleanup: remove EOF markers

[mdickinson]

Remove unnecessary and inconsistently applied "EOF" comments at ends of files. (Note: some of these were already removed in #446.)

[codecov-io]

Codecov Report

Merging #448 into master will increase coverage by 0.14%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master     #448      +/-   ##
==========================================
+ Coverage   64.71%   64.85%   +0.14%     
==========================================
  Files          44       44              
  Lines        7130     7130              
  Branches     1418     1418              
==========================================
+ Hits         4614     4624      +10     
+ Misses       2092     2083       -9     
+ Partials      424      423       -1

Impacted Files	Coverage Δ
traits/util/import_symbol.py	100% <ø> (ø)	⬆️
traits/etsconfig/etsconfig.py	63.58% <ø> (+6.17%)	⬆️
traits/adaptation/adapter.py	100% <ø> (ø)	⬆️
traits/adaptation/adaptation_manager.py	98.29% <ø> (ø)	⬆️
traits/util/clean_strings.py	0% <ø> (ø)	⬆️
traits/util/resource.py	12.06% <ø> (ø)	⬆️
traits/adaptation/adaptation_error.py	100% <ø> (ø)	⬆️
traits/adaptation/adaptation_offer.py	94.23% <ø> (ø)	⬆️
traits/util/deprecated.py	100% <ø> (ø)	⬆️
traits/testing/nose_tools.py	27.27% <ø> (ø)	⬆️
... and 1 more

---

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[codecov-io]

Codecov Report

Merging #448 into master will increase coverage by 0.14%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master     #448      +/-   ##
==========================================
+ Coverage   64.71%   64.85%   +0.14%     
==========================================
  Files          44       44              
  Lines        7130     7130              
  Branches     1418     1418              
==========================================
+ Hits         4614     4624      +10     
+ Misses       2092     2083       -9     
+ Partials      424      423       -1

Impacted Files	Coverage Δ
traits/util/import_symbol.py	100% <ø> (ø)	⬆️
traits/etsconfig/etsconfig.py	63.58% <ø> (+6.17%)	⬆️
traits/adaptation/adapter.py	100% <ø> (ø)	⬆️
traits/adaptation/adaptation_manager.py	98.29% <ø> (ø)	⬆️
traits/util/clean_strings.py	0% <ø> (ø)	⬆️
traits/util/resource.py	12.06% <ø> (ø)	⬆️
traits/adaptation/adaptation_error.py	100% <ø> (ø)	⬆️
traits/adaptation/adaptation_offer.py	94.23% <ø> (ø)	⬆️
traits/util/deprecated.py	100% <ø> (ø)	⬆️
traits/testing/nose_tools.py	27.27% <ø> (ø)	⬆️
... and 1 more

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update ef5313d...dca0624. Read the comment docs.

[rahulporuri]

LGTM. I don't see any more EOF markers in files.