[rust] [coverage] Don't pass -C link-dead-code

Bug: http://b/186873963

Per jgalenson@, this was added for GCOV and is not needed for clang
coverage.

Test: http://go/abtd/run/L71000000950546158
Change-Id: I352669687cbe764d938acb94d9d4fe0c24a31a56
diff --git a/rust/coverage_test.go b/rust/coverage_test.go
index 4b6c9d4..f3cd375 100644
--- a/rust/coverage_test.go
+++ b/rust/coverage_test.go
@@ -56,7 +56,7 @@
 	fizzCov := ctx.ModuleForTests("fizz_cov", "android_arm64_armv8-a_cov").Rule("rustc")
 	buzzNoCov := ctx.ModuleForTests("buzzNoCov", "android_arm64_armv8-a").Rule("rustc")
 
-	rustcCoverageFlags := []string{"-Z instrument-coverage", " -g ", "-C link-dead-code"}
+	rustcCoverageFlags := []string{"-Z instrument-coverage", " -g "}
 	for _, flag := range rustcCoverageFlags {
 		missingErrorStr := "missing rustc flag '%s' for '%s' module with coverage enabled; rustcFlags: %#v"
 		containsErrorStr := "contains rustc flag '%s' for '%s' module with coverage disabled; rustcFlags: %#v"