Revert "THRIFT-1482 Allow unix domain sockets in TSocket"

This reverts commit 0481fcdf93a5bac9a28355429672885fd105c10e.
diff --git a/lib/php/lib/Transport/TSocket.php b/lib/php/lib/Transport/TSocket.php
index c220a8b..fb74fdb 100644
--- a/lib/php/lib/Transport/TSocket.php
+++ b/lib/php/lib/Transport/TSocket.php
@@ -218,7 +218,7 @@
             throw new TTransportException('Cannot open null host', TTransportException::NOT_OPEN);
         }
 
-        if ($this->port_ <= 0 && strpos($this->host_, 'unix://') !== 0) {
+        if ($this->port_ <= 0) {
             throw new TTransportException('Cannot open without port', TTransportException::NOT_OPEN);
         }
 
diff --git a/lib/php/test/Unit/Lib/Transport/TSocketTest.php b/lib/php/test/Unit/Lib/Transport/TSocketTest.php
index 3a6a5eb..6bab297 100644
--- a/lib/php/test/Unit/Lib/Transport/TSocketTest.php
+++ b/lib/php/test/Unit/Lib/Transport/TSocketTest.php
@@ -246,33 +246,6 @@
         $this->assertTrue($transport->isOpen());
     }
 
-    public function testOpenUnixSocket()
-    {
-        $host = 'unix:///tmp/ipc.sock';
-        $port = -1;
-        $persist = false;
-        $debugHandler = null;
-
-        $this->getFunctionMock('Thrift\Transport', 'fsockopen')
-             ->expects($this->once())
-             ->with(
-                 $host,
-                 $port,
-                 $this->anything(), #$errno,
-                 $this->anything(), #$errstr,
-                 $this->anything() #$this->sendTimeoutSec_ + ($this->sendTimeoutUsec_ / 1000000),
-             );
-
-        $transport = new TSocket(
-            $host,
-            $port,
-            $persist,
-            $debugHandler
-        );
-
-        $transport->open();
-    }
-
     /**
      * @dataProvider open_THRIFT_5132_DataProvider
      */