Dropped ifdef guards against obsolete libpq versions

One of them was actually wrong: lobject_type.c wouldn't have compiled
pre 8.3 (broken in 6e841a41, 2 years ago).

psycopg/adapter_binary.c

@@ -39,11 +39,9 @@ static unsigned char *
 binary_escape(unsigned char *from, size_t from_length,
                size_t *to_length, PGconn *conn)
 {
-#if PG_VERSION_NUM >= 80104
     if (conn)
         return PQescapeByteaConn(conn, from, from_length, to_length);
     else
-#endif
         return PQescapeBytea(from, from_length, to_length);
 }
 

psycopg/lobject_int.c

@@ -474,8 +474,6 @@ lobject_export(lobjectObject *self, const char *filename)
     return retvalue;
 }
 
-#if PG_VERSION_NUM >= 80300
-
 RAISES_NEG int
 lobject_truncate(lobjectObject *self, size_t len)
 {
@@ -510,5 +508,3 @@ lobject_truncate(lobjectObject *self, size_t len)
     return retvalue;
 
 }
-
-#endif /* PG_VERSION_NUM >= 80300 */

psycopg/lobject_type.c

@@ -266,8 +266,6 @@ psyco_lobj_get_closed(lobjectObject *self, void *closure)
     return closed;
 }
 
-#if PG_VERSION_NUM >= 80300
-
 #define psyco_lobj_truncate_doc \
 "truncate(len=0) -- Truncate large object to given size."
 
@@ -327,10 +325,8 @@ static struct PyMethodDef lobjectObject_methods[] = {
      METH_NOARGS, psyco_lobj_unlink_doc},
     {"export",(PyCFunction)psyco_lobj_export,
      METH_VARARGS, psyco_lobj_export_doc},
-#if PG_VERSION_NUM >= 80300
     {"truncate",(PyCFunction)psyco_lobj_truncate,
      METH_VARARGS, psyco_lobj_truncate_doc},
-#endif /* PG_VERSION_NUM >= 80300 */
     {NULL}
 };
 
@@ -475,6 +471,3 @@ PyTypeObject lobjectType = {
     0,          /*tp_alloc*/
     lobject_new, /*tp_new*/
 };
-
-#endif
-

psycopg/psycopgmodule.c

@@ -164,7 +164,6 @@ exit:
 static PyObject *
 psyco_quote_ident(PyObject *self, PyObject *args, PyObject *kwargs)
 {
-#if PG_VERSION_NUM >= 90000
     PyObject *ident = NULL, *obj = NULL, *result = NULL;
     connectionObject *conn;
     const char *str;
@@ -204,10 +203,6 @@ exit:
     Py_XDECREF(ident);
 
     return result;
-#else
-    PyErr_SetString(NotSupportedError, "PQescapeIdentifier not available in libpq < 9.0");
-    return NULL;
-#endif
 }
 
 /** type registration **/
@@ -285,9 +280,7 @@ psyco_libcrypto_threads_init(void)
     if ((m = PyImport_ImportModule("ssl"))) {
         /* disable libcrypto setup in libpq, so it won't stomp on the callbacks
            that have already been set up */
-#if PG_VERSION_NUM >= 80400
         PQinitOpenSSL(1, 0);
-#endif
         Py_DECREF(m);
     }
     else {

psycopg/utils.c

@@ -67,12 +67,10 @@ psycopg_escape_string(connectionObject *conn, const char *from, Py_ssize_t len,
     }
 
     {
-        #if PG_VERSION_NUM >= 80104
             int err;
             if (conn && conn->pgconn)
                 ql = PQescapeStringConn(conn->pgconn, to+eq+1, from, len, &err);
             else
-        #endif
                 ql = PQescapeString(to+eq+1, from, len);
     }