Remove kludge for duplicate jniThrowNullPointerException

All uses of jniThrowNullPointerException within header_only_include
have no message, so dropping the argument avoids the clashing
definition when included in libnativehelper.

Bug: 123003088
Test: m

Change-Id: Icc5d3564e5b9ceb2fd09213199fa30a0b702596a
5 files changed