Bug 1471717 - Disable mozharness log format changes for android and linux; r=me,a=test-only

This effectively backs out the previous log format changes to avoid the
difficulties of bug 1473565. Hopefully this can be re-enabled once treeherder
is updated.

testing/mozharness/configs/android/android_common.py

@@ -46,7 +46,7 @@ config = {
     "tooltool_servers": ['http://relengapi/tooltool/'],
     "hostutils_manifest_path": "testing/config/tooltool-manifests/linux64/hostutils.manifest",
     "avds_dir": "/builds/worker/workspace/build/.android",
-    "log_format": "%(levelname)8s - %(message)s",
+    # "log_format": "%(levelname)8s - %(message)s",
     "log_tbpl_level": "info",
     "log_raw_level": "info",
     "minidump_stackwalk_path": "/usr/local/bin/linux64-minidump_stackwalk",

testing/mozharness/configs/unittests/linux_unittest.py

@@ -287,5 +287,5 @@ config = {
     "download_nodejs": True,
     "nodejs_path": NODEJS_PATH,
     "nodejs_tooltool_manifest_path": NODEJS_TOOLTOOL_MANIFEST_PATH,
-    "log_format": "%(levelname)8s - %(message)s",
+    # "log_format": "%(levelname)8s - %(message)s",
 }