Remove MicroWindows support.

MicroWindows (aka Nano-X) support hasn’t been updated since 2010 and last work for it in wxWidgets happened more than 10 years ago.

samples/widgets/makefile.mic

@@ -1,87 +0,0 @@
-##############################################################################
-# Microwindows template Makefile
-# Copyright (c) 2000 Martin Jolicoeur, Greg Haerr
-# Licence:  wxWindows Licence
-##############################################################################
-
-TOP=$(MICROWINDOWS)
-ifeq "$(MICROWINDOWS)" ""
-TOP=/home/julians/local/microwindows/microwindows-0.89pre8/src
-endif
-
-CONFIG = $(TOP)/config
-WXDIR = ../..
-OBJSUFF = o
-SRCSUFF = cpp
-WXLIB=$(WXDIR)/lib/libwx.a
-AROPTIONS = ruv
-RANLIB =  ranlib
-RM = rm -f
-
-ZLIBLIB = $(WXDIR)/lib/libzlib.a
-PNGLIB  = $(WXDIR)/lib/libpng.a
-JPEGLIB = $(WXDIR)/lib/libjpeg.a
-TIFFLIB = $(WXDIR)/lib/libtiff.a
-
-include $(CONFIG)
-
-######################## Additional Flags section ############################
-
-# Directories list for header files
-INCLUDEDIRS += -I$(WXDIR)/include
-# Defines for preprocessor
-DEFINES += -DMWIN -D__WXMSW__ -D__WXMICROWIN__ -D__WXUNIVERSAL__ -D__WIN32__ -D__WIN95__ -DHAVE_BOOL -DMICROWIN_TODO=1 -D__UNIX__ -DHAVE_NANOSLEEP -DMICROWIN_NOCONTROLS -D__WXDEBUG__ -DwxSIZE_T_IS_UINT
-
-# Compilation flags for C files OTHER than include directories
-CFLAGS +=
-# Preprocessor flags OTHER than defines
-CPPFLAGS += 
-# Linking flags
-#LDFLAGS += -lwx -L$(WXDIR)/lib
-LDFLAGS += $(WXLIB)
-
-############################# targets section ################################
-
-# If you want to create a library with the objects files, define the name here
-LIBNAME =
-
-# If we put it below OBJS=, Makefile.rules includes .depend
-# and it continually looks for .c files to satisfy .o.cpp
-# dependency. What's going on there?
-include $(TOP)/Makefile.rules
-
-# List of objects to compile
-OBJS = widgets.o button.o combobox.o gauge.o listbox.o notebook.o radiobox.o slider.o spinbtn.o \
- static.o textctrl.o 
-
-all: widgets
-
-######################### Makefile.rules section #############################
-
-
-
-######################## Tools targets section ###############################
-
-widgets: $(OBJS) $(MWINLIBS) $(WXLIB) $(TOP)/config
-	$(CC) $(CFLAGS) $(LDFLAGS) $(OBJS) -o $@ $(WXLIB) $(MWINLIBS) -lm
-
-#.SUFFIXES: .cpp .cxx .c
-
-#.c.o:
-#	$(CC) -c $(CFLAGS) $(CFLAGS) -o $@ $*.c
-
-.cxx.o:
-	$(CC) -c $(CPPFLAGS) $(CFLAGS) -o $@ $*.cxx
-
-.cpp.o:
-	$(CC) -c $(CPPFLAGS) $(CFLAGS) -o $@ $*.cpp
-
-cleanwx:
-	-$(RM) *.o
-	-$(RM) widgets
-
-wx:
-	@pushd $(WXDIR)/src/msw; make -f makefile.mic all; popd
-
-wxfull:
-	@pushd $(WXDIR)/src/msw; make -f makefile.mic cleanwx all; popd