update filesystem.c

Author: iayanpahwa

supervisor/shared/filesystem.c

@@ -71,7 +71,7 @@ static void make_empty_file(FATFS *fatfs, const char *path) {
 
 
 static void make_sample_code_file(FATFS *fatfs) {
-    #if CIRCUITPY_FULL_BUILD == 1
+    #if CIRCUITPY_FULL_BUILD
     FIL fs;
     UINT char_written = 0;
     const byte buffer[] = "print('Hello World!')\n";