tests: Cleanup build_angle_end2end_tests_library block 1. If Vulkan is enabled, always include the Vulkan tests in the end2end tests, rather than excluding them when build_angle_end2end_tests_library is 'true'. 2. Remove NDK include. It's unnecessary, because the 'angle' target already manages its own include_dirs. Bug: b/279980674 Change-Id: Ibf3c29a5f90f161a7c9a69f5c4736ea4c3ef49ae Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/6580875 Reviewed-by: Solti Ho <solti@google.com> Reviewed-by: Yuxin Hu <yuxinhu@google.com> Commit-Queue: Tim Van Patten <timvp@google.com>