[scudo] Remove benchmarks file. (#102077)

The benchmarks have never been used, and don't really provide much
useful information. So remove them completely.

Author: cferris1000

compiler-rt/lib/scudo/standalone/CMakeLists.txt

@@ -246,7 +246,6 @@ if(COMPILER_RT_SCUDO_STANDALONE_BUILD_SHARED)
     PARENT_TARGET scudo_standalone)
 endif()
 
-add_subdirectory(benchmarks)
 if(COMPILER_RT_INCLUDE_TESTS)
   add_subdirectory(tests)
 endif()