Fix warnings about ch32v003fun HOT 8 CLOSED

In file included from ch32v003evt/ch32v00x.h:2396,
                 from ch32v003evt/startup_ch32v003.c:8:
ch32v003evt/ch32v00x_conf.h:1784:13: warning: 'DelaySysTick' defined but not used [-Wunused-function]
 static void DelaySysTick( uint32_t n )
             ^~~~~~~~~~~~
Compiling .pio/build/ws2812demo/src/examples/ws2812demo/ws2812bdemo.o
examples/ws2812demo/ws2812bdemo.c: In function 'WS2812BLEDCallback':
examples/ws2812demo/ws2812bdemo.c:27:30: warning: suggest parentheses around '+' in operand of '&' [-Wparentheses]
  uint32_t fire = huetable[(rs+190&0xff)] | (huetable[(rs+30&0xff)]<<8) | (huetable[(rs+0)]<<16);
                            ~~^~~~
examples/ws2812demo/ws2812bdemo.c:27:57: warning: suggest parentheses around '+' in operand of '&' [-Wparentheses]
  uint32_t fire = huetable[(rs+190&0xff)] | (huetable[(rs+30&0xff)]<<8) | (huetable[(rs+0)]<<16);
                                                       ~~^~~
In file included from examples/ws2812demo/ws2812bdemo.c:13:
At top level:
examples/ws2812demo/color_utilities.h:12:17: warning: 'EHSVtoHEX' defined but not used [-Wunused-function]
 static uint32_t EHSVtoHEX( uint8_t hue, uint8_t sat, uint8_t val )
                 ^~~~~~~~~

examples\debugprintfdemo\debugprintfdemo.c:33:14: warning: format '%d' expects argument of type 'int', but argument 2 has type 'uint32_t' {aka 'long unsigned int'} [-Wformat=]
   printf( "+%d\n", count++ );
             ~^     ~~~~~~~
             %ld
examples\debugprintfdemo\debugprintfdemo.c:36:14: warning: format '%d' expects argument of type 'int', but argument 2 has type 'uint32_t' {aka 'long unsigned int'} [-Wformat=]
   printf( "-%d\n", count++ );
             ~^     ~~~~~~~
             %ld
ch32v003fun\ch32v003fun.c: In function '_write':
ch32v003fun\ch32v003fun.c:900:12: warning: unused variable 'd' [-Wunused-variable]
   uint32_t d;
            ^
examples\sandbox\sandbox.c: In function 'SRAMCode':
examples\sandbox\sandbox.c:24:1: warning: 'noreturn' function does return
 }
 ^
 
examples\self_modify_code\self_modify_code.c: In function 'main':
examples\self_modify_code\self_modify_code.c:94:23: warning: format '%x' expects argument of type 'unsigned int', but argument 3 has type 'uint32_t' {aka 'long unsigned int'} [-Wformat=]
    printf( "%03x = %08x\n", i, rv );
                    ~~~^        ~~
                    %08lx
examples\uartdemo\uartdemo.c:32:20: warning: format '%d' expects argument of type 'int', but argument 2 has type 'uint32_t' {aka 'long unsigned int'} [-Wformat=]
   printf( "Count: %d\n", count++ );
                   ~^     ~~~~~~~
                   %ld
examples\ws2812bdemo\ws2812bdemo.c:27:30: warning: suggest parentheses around '+' in operand of '&' [-Wparentheses]
  uint32_t fire = huetable[(rs+190&0xff)] | (huetable[(rs+30&0xff)]<<8) | (huetable[(rs+0)]<<16);
                            ~~^~~~
examples\ws2812bdemo\ws2812bdemo.c:27:57: warning: suggest parentheses around '+' in operand of '&' [-Wparentheses]
  uint32_t fire = huetable[(rs+190&0xff)] | (huetable[(rs+30&0xff)]<<8) | (huetable[(rs+0)]<<16);
                                                       ~~^~~
In file included from examples\ws2812bdemo\ws2812bdemo.c:13:
At top level:
examples\ws2812bdemo\color_utilities.h:12:17: warning: 'EHSVtoHEX' defined but not used [-Wunused-function]
 static uint32_t EHSVtoHEX( uint8_t hue, uint8_t sat, uint8_t val )
                 ^~~~~~~~~