Revert "Make test-sync-fileread pass even when git cr/lf conversion is enabled"

We'll solve this problem with a .gitattributes file.
This reverts commit 27ef0b0903.

test/fixtures/x.bin

@@ -1 +0,0 @@
-xyz

test/simple/test-sync-fileread.js

@@ -24,6 +24,6 @@ var assert = require('assert');
 var path = require('path');
 var fs = require('fs');
 
-var fixture = path.join(__dirname, '../fixtures/x.bin');
+var fixture = path.join(__dirname, '../fixtures/x.txt');
 
 assert.equal('xyz\n', fs.readFileSync(fixture));