CodeSamples: Remove generated files from repository

Now, as Makefile.arch and api.h are generated when necessary,
they are no longer necessary in the repository.

Also fix entry for gprof-helper.c in .gitignore and remove an
executable file sneaked into repository under datastruct/Issaquah/.

Signed-off-by: Akira Yokosawa <akiyks@gmail.com>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
4 files changed