Remove explicit installation step from run-buildbot since we now alwa…

…ys do it before we run the test suite

libcxx/utils/ci/run-buildbot

@@ -154,19 +154,6 @@ function check-runtimes() {
 
     echo "+++ Running the libunwind tests"
     ${NINJA} -vC "${BUILD_DIR}" check-unwind
-
-    # TODO: On macOS 13.5, the linker seems to have an issue where it will pick up
-    #       a library if it exists inside a -L search path, even if we don't link
-    #       against that library. This happens with libunwind.dylib if it is built
-    #       at the point when we run the libc++ tests, which causes issues cause we
-    #       are also linking against the system unwinder.
-    #
-    #       I believe this is a linker regression and I reported it as rdar://115842730.
-    #       It should be possible to move this installation step back to the top once
-    #       that issue has been resolved, but in the meantime it doesn't really hurt to
-    #       have it here.
-    echo "--- Installing libc++, libc++abi and libunwind to a fake location"
-    ${NINJA} -vC "${BUILD_DIR}" install-cxx install-cxxabi install-unwind
 }
 
 # TODO: The goal is to test this against all configurations. We should also move