Merge "Remove obsolete make settings" am: 757345ec

# Prevent accidentally changing these variables

.KATI_READONLY := SHELL empty space comma newline pound backslash

# this turns off the suffix rules built into make

.SUFFIXES:

# this turns off the RCS / SCCS implicit rules of GNU Make

% : RCS/%,v

% : RCS/%

% : %,v

% : s.%

% : SCCS/s.%

# If a rule fails, delete $@.

.DELETE_ON_ERROR:

# Mark variables that should be coming as environment variables from soong_ui

# as readonly

.KATI_READONLY := OUT_DIR TMPDIR BUILD_DATETIME_FILE