Remove old build system artifact

src/systemcmds/tests/module.mk

@@ -1,51 +0,0 @@
-#
-# Assorted tests and the like
-#
-
-MODULE_COMMAND		 = tests
-MODULE_STACKSIZE	 = 60000
-MAXOPTIMIZATION		 = -O0
-
-SRCS			 = test_adc.c \
-			   test_bson.c \
-			   test_float.c \
-			   test_gpio.c \
-			   test_hott_telemetry.c \
-			   test_hrt.c \
-			   test_int.c \
-			   test_jig_voltages.c \
-			   test_led.c \
-			   test_sensors.c \
-			   test_servo.c \
-			   test_sleep.c \
-			   test_uart_baudchange.c \
-			   test_uart_console.c \
-			   test_uart_loopback.c \
-			   test_uart_send.c \
-			   test_mixer.cpp \
-			   test_mathlib.cpp \
-			   test_file.c \
-			   test_file2.c \
-			   tests_main.c \
-			   test_param.c \
-			   test_ppm_loopback.c \
-			   test_rc.c \
-			   test_conv.cpp \
-			   test_mount.c \
-			   test_eigen.cpp
-
-ifeq ($(PX4_TARGET_OS), nuttx)
-SRCS			+= test_time.c
-
-EXTRACXXFLAGS = -Wframe-larger-than=6000
-else
-EXTRACXXFLAGS =
-endif
-
-EXTRACXXFLAGS += -Wno-float-equal
-
-# Flag is only valid for GCC, not clang
-ifneq ($(USE_GCC), 0)
-EXTRACXXFLAGS += -Wno-double-promotion -Wno-error=logical-op
-endif
-