Use delete[] to de-allocate pointers from new[]

Upstream clang has a new diagnostic, '-Wmismatched-new-delete' to
generate a warning (that becomes an error with -Werror) when delete is
used to deallocate pointers created with 'new[]'.  This patch fixes
'delete's that trigger this warning/error.

Change-Id: I7551e856b4b13bfae4cb78b5664d8652322683cf