cleanup: remove unused imports

src/dc_loginparam.rs

@@ -1,8 +1,5 @@
-use c2rust_bitfields::BitfieldStruct;
 use libc;
 
-use crate::dc_context::dc_context_t;
-use crate::dc_lot::dc_lot_t;
 use crate::dc_sqlite3::*;
 use crate::dc_strbuilder::*;
 use crate::dc_tools::*;