Fix some compilation warnings

Author: simolus3

crates/core/src/checkpoint.rs

@@ -1,6 +1,5 @@
 extern crate alloc;
 
-use alloc::format;
 use alloc::string::String;
 use alloc::vec::Vec;
 use core::ffi::c_int;

crates/core/src/diff.rs

@@ -1,6 +1,5 @@
 extern crate alloc;
 
-use alloc::format;
 use alloc::string::{String, ToString};
 use core::ffi::c_int;
 

crates/core/src/fix_data.rs

@@ -117,7 +117,7 @@ fn remove_duplicate_key_encoding(key: &str) -> Option<String> {
 }
 
 fn powersync_remove_duplicate_key_encoding_impl(
-    ctx: *mut sqlite::context,
+    _ctx: *mut sqlite::context,
     args: &[*mut sqlite::value],
 ) -> Result<Option<String>, SQLiteError> {
     let arg = args.get(0).ok_or(ResultCode::MISUSE)?;

crates/core/src/json_merge.rs

@@ -1,6 +1,5 @@
 extern crate alloc;
 
-use alloc::format;
 use alloc::string::{String, ToString};
 use core::ffi::c_int;
 

crates/core/src/lib.rs

@@ -2,7 +2,6 @@
 #![feature(vec_into_raw_parts)]
 #![allow(internal_features)]
 #![feature(core_intrinsics)]
-#![feature(error_in_core)]
 #![feature(assert_matches)]
 
 extern crate alloc;

crates/core/src/uuid.rs

@@ -1,6 +1,5 @@
 extern crate alloc;
 
-use alloc::format;
 use alloc::string::String;
 use alloc::string::ToString;
 use core::ffi::c_int;

crates/loadable/src/lib.rs

@@ -3,7 +3,6 @@
 #![feature(core_intrinsics)]
 #![allow(internal_features)]
 #![feature(lang_items)]
-#![feature(error_in_core)]
 
 extern crate alloc;