tools: hide tcc warning on macos for now

cmd/tools/detect_tcc.v

@@ -4,7 +4,8 @@ fn main() {
 		exit(0)
 	}
 
-	println('
+	$if !macos {
+		println('
 Note: `tcc` was not used, so unless you install it yourself, your backend
 C compiler will be `cc`, which is usually either `clang`, `gcc` or `msvc`.
 
@@ -12,4 +13,5 @@ These C compilers, are several times slower at compiling C source code,
 compared to `tcc`. They do produce more optimised executables, but that
 is done at the cost of compilation speed.
 ')
+	}
 }