Remove the old coverage-reports and coverage directories

Author: Zalathar

src/tools/compiletest/src/header.rs

@@ -913,7 +913,7 @@ pub fn make_test_description<R: Read>(
         // The run-coverage tests are treated as having these extra directives,
         // without needing to specify them manually in every test file.
         // (Some of the comments below have been copied over from
-        // `tests/run-make/coverage-reports/Makefile`.)
+        // `tests/run-make/coverage-reports/Makefile`, which no longer exists.)
         Mode::RunCoverage => {
             &[
                 "needs-profiler-support",

tests/run-make/coverage-llvmir/Makefile

@@ -6,7 +6,7 @@
 # version during testing, with an additional directive at the top of this file
 # that sets, for example: `min-llvm-version: 12.0`
 
-include ../coverage/coverage_tools.mk
+include ../tools.mk
 
 BASEDIR=../coverage-llvmir