fx.collections: update tests

fx.collections/test/numbers.c

@@ -1,12 +1,7 @@
-#include <fx/double.h>
+#include <fx/float.h>
 #include <stdio.h>
 
 int main(void)
 {
-	fx_double *d = fx_double_create(6.8);
-
-	printf("double=%lf\n", fx_double_get_value(d));
-	fx_double_unref(d);
-
 	return 0;
 }