Index: .travis.yml
==================================================================
--- .travis.yml
+++ .travis.yml
@@ -290,18 +290,10 @@
             wget -q https://franke.ms/download/amiga-gcc.tgz;
             tar -C / -xzf amiga-gcc.tgz;
     fi
 
 script:
-  # This needs to use ed on macOS, as it has no GNU sed, and sed on Linux, as
-  # some Travis hosts have no ed.
-  - if [ "$TRAVIS_OS_NAME" = "osx" ]; then
-            echo -e '%s/-DSTDOUT$/&_SIMPLE/\nwq' | ed -s tests/Makefile;
-    else
-            sed -i 's/-DSTDOUT$/&_SIMPLE/' tests/Makefile;
-    fi
-
   - build() {
             if ! git clean -fxd >/tmp/clean_log 2>&1; then
                     cat /tmp/clean_log;
                     exit 1;
             fi;