Cleanup in preparation for Android use.

- Remove files we do not expect to use.  We want only the arithmetic
  package, not the old calculator applet UI, nor the simple comand-line one.
- Adjust white space in remaining files.
- Remove the part of COPYRIGHT.txt that applied only to a now deleted file.

No substantive changes except for file deletions.

Change-Id: Ife71985023ac60adc10caf016ada704ad08d19d6
12 files changed
tree: 8c5311aa256ae53e60b1158fb94101087dbc1e1d
  1. src/
  2. tests/
  3. COPYRIGHT.txt
  4. impl.html