Removed all instances of == and != in PHP code
diff --git a/src/php/lib/Grpc/ActiveCall.php b/src/php/lib/Grpc/ActiveCall.php
index e0ea43a..847cfee 100755
--- a/src/php/lib/Grpc/ActiveCall.php
+++ b/src/php/lib/Grpc/ActiveCall.php
@@ -66,12 +66,7 @@
    * @param ByteBuffer $data The data to write
    */
   public function write($data) {
-    if($this->call->start_write($data,
-                                WRITE_ACCEPTED,
-                                $this->flags) != OP_OK) {
-      // TODO(mlumish): more useful error
-      throw new \Exception("Cannot call write after writesDone");
-    }
+    $this->call->start_write($data, WRITE_ACCEPTED, $this->flags);
     $this->completion_queue->pluck(WRITE_ACCEPTED, Timeval::inf_future());
   }