Fix Android build more.

Android doesn't have the Yama LSM, so this line isn't needed. (It doesn't
compile either.)

Original CL: https://breakpad.appspot.com/610002/
A=thakis@chromium.org
R=mark@chromium.org

Review URL: https://breakpad.appspot.com/611002

git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1198 4c0a9323-5329-0410-9bdc-e9ce6186880e
Linux: Fix builds on systems without PR_SET_PTRACER in linux/prctl.h.

R=thakis@chromium.org

Review URL: https://breakpad.appspot.com/612002

git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1199 4c0a9323-5329-0410-9bdc-e9ce6186880e