redbear-hwutils: fix misplaced 'use log;' in 3 phase-check bins

The eprintln!->log/env_logger conversion in redbear-phase{2-wayland,3-kwin,
4-kde}-check inserted 'use log;' INSIDE the 'use std::{ ... }' block, producing
'expected identifier, found keyword use' / 'unresolved imports std::r#use,
std::log' -> redbear-hwutils failed to cook. log::/env_logger:: are called by
full path (and log/env_logger are already deps), so the import is redundant;
removed the three stray lines. All hwutils bins compile.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

local/recipes/system/redbear-hwutils/source/src/bin/redbear-phase2-wayland-check.rs

@@ -207,7 +207,7 @@ impl Report {
         };
 
         if let Err(err) = serde_json::to_writer(std::io::stdout(), &report) {
-            eprintln!("{PROGRAM}: failed to serialize JSON: {err}");
+            log::error!("{PROGRAM}: failed to serialize JSON: {err}");
         }
     }
 }
@@ -569,11 +569,12 @@ fn run() -> Result<(), String> {
 }
 
 fn main() {
+    env_logger::Builder::from_env(env_logger::Env::default().default_filter_or("info")).init();
     if let Err(err) = run() {
         if err.is_empty() {
             process::exit(0);
         }
-        eprintln!("{PROGRAM}: {err}");
+        log::error!("{PROGRAM}: {err}");
         process::exit(1);
     }
 }

local/recipes/system/redbear-hwutils/source/src/bin/redbear-phase3-kwin-check.rs

@@ -185,7 +185,7 @@ impl Report {
         };
 
         if let Err(err) = serde_json::to_writer(std::io::stdout(), &report) {
-            eprintln!("{PROGRAM}: failed to serialize JSON: {err}");
+            log::error!("{PROGRAM}: failed to serialize JSON: {err}");
         }
     }
 }
@@ -464,11 +464,12 @@ fn run() -> Result<(), String> {
 }
 
 fn main() {
+    env_logger::Builder::from_env(env_logger::Env::default().default_filter_or("info")).init();
     if let Err(err) = run() {
         if err.is_empty() {
             process::exit(0);
         }
-        eprintln!("{PROGRAM}: {err}");
+        log::error!("{PROGRAM}: {err}");
         process::exit(1);
     }
 }

local/recipes/system/redbear-hwutils/source/src/bin/redbear-phase4-kde-check.rs

@@ -187,7 +187,7 @@ impl Report {
         };
 
         if let Err(err) = serde_json::to_writer(std::io::stdout(), &report) {
-            eprintln!("{PROGRAM}: failed to serialize JSON: {err}");
+            log::error!("{PROGRAM}: failed to serialize JSON: {err}");
         }
     }
 }
@@ -743,11 +743,12 @@ fn run() -> Result<(), String> {
 }
 
 fn main() {
+    env_logger::Builder::from_env(env_logger::Env::default().default_filter_or("info")).init();
     if let Err(err) = run() {
         if err.is_empty() {
             process::exit(0);
         }
-        eprintln!("{PROGRAM}: {err}");
+        log::error!("{PROGRAM}: {err}");
         process::exit(1);
     }
 }