Auto merge of #5155 - krishna-veerareddy:remove-unused-imports, r=flip1995

Remove unnecessary `Lint{Array|Pass}` imports

changelog: none

CONTRIBUTING.md

@@ -110,7 +110,7 @@ It's worth noting that the majority of `clippy_lints/src/lib.rs` is autogenerate
 ```rust
 // ./clippy_lints/src/else_if_without_else.rs
 
-use rustc::lint::{EarlyLintPass, LintArray, LintPass};
+use rustc_lint::{EarlyLintPass, EarlyContext};
 
 // ...
 

clippy_dev/src/new_lint.rs

@@ -117,7 +117,7 @@ fn get_lint_file_contents(
     context_import: &str,
 ) -> String {
     format!(
-        "use rustc_lint::{{LintArray, LintPass, {type}, {context_import}}};
+        "use rustc_lint::{{{type}, {context_import}}};
 use rustc_session::{{declare_lint_pass, declare_tool_lint}};
 {pass_import}
 

doc/adding_lints.md

@@ -138,7 +138,7 @@ at `clippy_lints/src/foo_functions.rs`. That's the crate where all the
 lint code is. This file has already imported some initial things we will need:
 
 ```rust
-use rustc::lint::{LintArray, LintPass, EarlyLintPass, EarlyContext};
+use rustc_lint::{EarlyLintPass, EarlyContext};
 use rustc_session::{declare_lint_pass, declare_tool_lint};
 use syntax::ast::*;
 ```

tests/ui/default_lint.rs

@@ -6,7 +6,6 @@ extern crate rustc;
 #[macro_use]
 extern crate rustc_session;
 extern crate rustc_lint;
-use rustc_lint::{LintArray, LintPass};
 
 declare_tool_lint! {
     pub clippy::TEST_LINT,

tests/ui/default_lint.stderr

@@ -1,5 +1,5 @@
 error: the lint `TEST_LINT_DEFAULT` has the default lint description
-  --> $DIR/default_lint.rs:18:1
+  --> $DIR/default_lint.rs:17:1
    |
 LL | / declare_tool_lint! {
 LL | |     pub clippy::TEST_LINT_DEFAULT,

tests/ui/lint_without_lint_pass.rs

@@ -6,7 +6,7 @@ extern crate rustc;
 #[macro_use]
 extern crate rustc_session;
 extern crate rustc_lint;
-use rustc_lint::{LintArray, LintPass};
+use rustc_lint::LintPass;
 
 declare_tool_lint! {
     pub clippy::TEST_LINT,