oeqa/selftest/rust: Add failed test cases to exclude list for Rust Oe-selftest

oeqa/selftest/rust: Add failed test cases to exclude list for Rust Oe-selftest

* Add the failing test cases in exclude_list to exclude them from testing during the Rust Oe-selftest.

* Drop  meta/recipes-devtools/rust/files/rust-oe-selftest.patch file as the failing tests are
  moved from being a patch to exclude_list in meta/lib/oeqa/selftest/cases/rust.py.

* When updating to a newer version of Rust, it is manually needed to update the exclude_list. The tests that fail are observed to
  work on some versions and fail on others. These tests have been excluded in order to successfully complete testing of Rust Oe-selftest.

* The tests that are passed and skipped are as follows-

Target                  PASS                    SKIPPED

ARM                     15507                    428
ARM64                   15535                    400
MIPS64                  15479                    456
X86                     15528                    407
X86-64                  15643                    292

Also, time the test execution and pass the time taken for inclusion in the test report.

[RP: Note duration addiion in the commit log]
Signed-off-by: Yash Shinde <Yash.Shinde@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>