diff --git a/ibus-libpinyin-use-opencc.patch b/ibus-libpinyin-use-opencc.patch
deleted file mode 100644
index aa85037..0000000
--- a/ibus-libpinyin-use-opencc.patch
+++ /dev/null
@@ -1,57 +0,0 @@
-Index: ibus-libpinyin-1.6.92/src/PYSimpTradConverter.cc
-===================================================================
---- ibus-libpinyin-1.6.92.orig/src/PYSimpTradConverter.cc
-+++ ibus-libpinyin-1.6.92/src/PYSimpTradConverter.cc
-@@ -40,44 +40,27 @@ namespace PY {
- #ifdef HAVE_OPENCC
- 
- class opencc {
--    static const int BUFFER_SIZE = 64;
- public:
-     opencc (void)
-     {
--        m_od = opencc_open (OPENCC_DEFAULT_CONFIG_SIMP_TO_TRAD);
--        g_assert (m_od != NULL);
-+        m_cc = opencc_open (OPENCC_DEFAULT_CONFIG_SIMP_TO_TRAD);
-+        g_assert (m_cc != NULL);
-     }
- 
-     ~opencc (void)
-     {
--        opencc_close(m_od);
-+        opencc_close(m_cc);
-     }
- 
-     void convert (const gchar *in, String &out)
-     {
--        glong n_char;
--        gunichar *in_ucs4 = g_utf8_to_ucs4_fast (in, -1, &n_char);
--
--        ucs4_t *pinbuf = (ucs4_t *)in_ucs4;
--        size_t inbuf_left = n_char;
--        while (inbuf_left != 0) {
--            ucs4_t *poutbuf = (ucs4_t *)m_buffer;
--            size_t outbuf_left = BUFFER_SIZE;
--            size_t retval = opencc_convert(m_od, &pinbuf, &inbuf_left, &poutbuf, &outbuf_left);
--            if (retval == (size_t) -1) {
--                /* append left chars in pinbuf */
--                g_warning ("opencc_convert return failed");
--                out << (gunichar *) pinbuf;
--                break;
--            }
--            *poutbuf = L'\0';
--            out << m_buffer;
--        }
--        g_free (in_ucs4);
-+        char * converted = opencc_convert_utf8 (m_cc, in, -1);
-+        g_assert (converted != NULL);
-+        out = converted;
-+        opencc_convert_utf8_free (converted);
-     }
- private:
--    opencc_t m_od;
--    gunichar m_buffer[BUFFER_SIZE + 1];
-+    opencc_t m_cc;
- };
- 
- void