pybricks.tools: Drop legacy awaitable code.

All modules have been upgraded, so we can drop this.

Author: laurensvalk

bricks/_common/sources.mk

@@ -98,7 +98,6 @@ PYBRICKS_PYBRICKS_SRC_C = $(addprefix pybricks/,\
 	robotics/pb_type_spikebase.c \
 	tools/pb_module_tools.c \
 	tools/pb_type_app_data.c \
-	tools/pb_type_awaitable.c \
 	tools/pb_type_async.c \
 	tools/pb_type_matrix.c \
 	tools/pb_type_stopwatch.c \

pybricks/common.h

@@ -23,7 +23,6 @@
 #include <pybricks/pupdevices.h>
 #include <pybricks/tools.h>
 #include <pybricks/tools/pb_type_async.h>
-#include <pybricks/tools/pb_type_awaitable.h>
 #include <pybricks/common/pb_type_device.h>
 
 void pb_package_pybricks_init(bool import_all);