fix: make C tests work again

src/extra/libs/fsdrv/lv_fs_stdio.c

@@ -14,7 +14,6 @@
 #ifndef WIN32
     #include <dirent.h>
     #include <unistd.h>
-    #include <errno.h>
 #else
     #include <windows.h>
 #endif
@@ -118,17 +117,7 @@ static void * fs_open(lv_fs_drv_t * drv, const char * path, lv_fs_mode_t mode)
     char buf[MAX_PATH_LEN];
     lv_snprintf(buf, sizeof(buf), LV_FS_STDIO_PATH "%s", path);
 
-    void * a = fopen(buf, flags);
-
-    printf("%s\n", path);
-    printf("%d\n", errno);
-
-    char buf2[512];
-    getcwd(buf2, 512);
-    printf("%s\n", buf2);
-    printf("%p\n", a);
-
-    return a;
+    return fopen(buf, flags);
 }
 
 /**

src/misc/lv_printf.h

@@ -68,38 +68,8 @@ typedef struct {
 int lv_snprintf_builtin(char * buffer, size_t count, const char * format, ...);
 int lv_vsnprintf_builtin(char * buffer, size_t count, const char * format, va_list va);
 
-/**
- * Tiny snprintf/vsnprintf implementation
- * \param buffer A pointer to the buffer where to store the formatted string
- * \param count The maximum number of characters to store in the buffer, including a terminating null character
- * \param format A string that specifies the format of the output
- * \param va A value identifying a variable arguments list
- * \return The number of characters that COULD have been written into the buffer, not counting the terminating
- *         null character. A value equal or larger than count indicates truncation. Only when the returned value
- *         is non-negative and less than count, the string has been completely written.
- */
-LV_FORMAT_ATTRIBUTE(3, 4) static inline int  lv_snprintf(char * buffer, size_t count, const char * format, ...)
-{
-
-    /* Declare a va_list type variable */
-    va_list args;
-
-    /* Initialise the va_list variable with the ... after fmt */
-    va_start(args, format);
-
-    /* Forward the '...' to vprintf */
-    int ret = LV_SNPRINTF(buffer, count, format, args);
-
-    /* Clean up the va_list */
-    va_end(args);
-
-    return ret;
-}
-
-LV_FORMAT_ATTRIBUTE(3, 0) static inline int lv_vsnprintf(char * buffer, size_t count, const char * format, va_list va)
-{
-    return  LV_VSNPRINTF(buffer, count, format, va);
-}
+#define lv_snprintf LV_SNPRINTF
+#define lv_vsnprintf LV_VSNPRINTF
 
 
 #ifdef __cplusplus