Revert "crypto.createHash fix for node.js < 11"

This reverts commit fe4c2f5.

Testing has shown the changes are not necessary, so this removes
code doing version sniffing.

closes #757

Author: dougwilson

Changes.md

@@ -7,7 +7,7 @@ you spot any mistakes.
 ## HEAD
 
 * fix authentication w/password failure for node.js 0.10.5 #746 #752
-* fix authentication w/password TypeError exception for node.js 0.10.0-0.10.4
+* fix authentication w/password TypeError exception for node.js 0.10.0-0.10.4 #747
 * fix specifying `values` in `conn.query({...}).on(...)` pattern #755
 * fix long stack trace to include the `pool.query(...)` call #715
 

lib/protocol/Auth.js

@@ -1,26 +1,11 @@
 var Buffer = require('buffer').Buffer;
 var Crypto = require('crypto');
 var Auth   = exports;
-var semver = require('semver');
-
-var sha1;
-if (semver.gt(process.version, '0.10.5')){
-  // support node.js > 0.10.5
-  // new interface in node.js 0.10, but exclude < 0.10.5 due to core bugs
-  sha1 = function(msg) {
-    var hash = Crypto.createHash('sha1');
-    hash.setEncoding('binary');
-    hash.write(msg);
-    hash.end();
-    return hash.read();
-  }
-} else {
-  sha1 = function(msg) {
-    var hash = Crypto.createHash('sha1');
-    hash.update(msg);
-    // hash.digest() does not output buffers yet
-    return hash.digest('binary');
-  }
+
+function sha1(msg) {
+  var hash = Crypto.createHash('sha1');
+  hash.update(msg, 'binary');
+  return hash.digest('binary');
 }
 Auth.sha1 = sha1;
 

package.json

@@ -18,8 +18,7 @@
   "dependencies": {
     "require-all": "0.0.3",
     "bignumber.js": "1.0.1",
-    "readable-stream": "~1.1.9",
-    "semver": "2.2.1"
+    "readable-stream": "~1.1.9"
   },
   "devDependencies": {
     "utest": "0.0.6",