[clang] [MC/DC] Update CoverageMapping tests (PR #125404)

[NAKAMURA Takumi via cfe-commits]

================
@@ -0,0 +1,34 @@
+// RUN: %clang_cc1 -triple %itanium_abi_triple -std=c++11 -fcoverage-mcdc -fprofile-instrument=clang -fcoverage-mapping -dump-coverage-mapping -emit-llvm-only %s 2> %t.stderr.txt | FileCheck %s
----------------
chapuni wrote:

Note, this test will be withdrawn since I will withdraw #125484.

https://github.com/llvm/llvm-project/pull/125404