Update led and pwm source code to remove compile warnning

guowenxue

2024-03-12 cbbab621e5e5d3b1407bd898544ab8b7487563a3

 project/socketd/booster/ds18b20.c

@@ -49,7 +49,6 @@
    struct dirent  *direntp;
    int             fd =-1;
    char           *ptr;
    float           value;
    int             found = 0;

    if( !temp )