style: fix new lints

The Rust compiler seems to have gotten smarter at finding unused or
redundant imports.

crates/cli/src/wtr.rs

@@ -1,6 +1,6 @@
 use std::io::{self, IsTerminal};
 
-use termcolor::{self, HyperlinkSpec};
+use termcolor::HyperlinkSpec;
 
 /// A writer that supports coloring with either line or block buffering.
 #[derive(Debug)]

crates/core/logger.rs

@@ -6,7 +6,7 @@ print to stderr. We therefore avoid bringing in extra dependencies just for
 this functionality.
 */
 
-use log::{self, Log};
+use log::Log;
 
 /// The simplest possible logger that logs to stderr.
 ///

crates/ignore/src/walk.rs

@@ -11,7 +11,7 @@ use std::{
 use {
     crossbeam_deque::{Stealer, Worker as Deque},
     same_file::Handle,
-    walkdir::{self, WalkDir},
+    walkdir::WalkDir,
 };
 
 use crate::{

crates/pcre2/src/matcher.rs

@@ -428,7 +428,7 @@ fn has_uppercase_literal(pattern: &str) -> bool {
 
 #[cfg(test)]
 mod tests {
-    use grep_matcher::{LineMatchKind, Matcher};
+    use grep_matcher::LineMatchKind;
 
     use super::*;
 

crates/regex/src/matcher.rs

@@ -552,8 +552,6 @@ impl RegexCaptures {
 
 #[cfg(test)]
 mod tests {
-    use grep_matcher::{LineMatchKind, Matcher};
-
     use super::*;
 
     // Test that enabling word matches does the right thing and demonstrate

crates/searcher/src/line_buffer.rs

@@ -548,7 +548,7 @@ fn replace_bytes(
 
 #[cfg(test)]
 mod tests {
-    use bstr::{ByteSlice, ByteVec};
+    use bstr::ByteVec;
 
     use super::*;
 

crates/searcher/src/lines.rs

@@ -198,8 +198,6 @@ fn preceding_by_pos(
 
 #[cfg(test)]
 mod tests {
-    use grep_matcher::Match;
-
     use super::*;
 
     const SHERLOCK: &'static str = "\

crates/searcher/src/searcher/mod.rs

@@ -7,7 +7,6 @@ use std::{
 };
 
 use {
-    encoding_rs,
     encoding_rs_io::DecodeReaderBytesBuilder,
     grep_matcher::{LineTerminator, Match, Matcher},
 };

crates/searcher/src/testutil.rs

@@ -725,8 +725,6 @@ impl TesterConfig {
 
 #[cfg(test)]
 mod tests {
-    use grep_matcher::{Match, Matcher};
-
     use super::*;
 
     fn m(start: usize, end: usize) -> Match {