Remove duplicated .gitignore

.gitignore

@@ -19,6 +19,7 @@ Cargo.lock
 /target
 /clippy_lints/target
 /clippy_workspace_tests/target
+/clippy_dev/target
 
 # Generated by dogfood
 /target_recur/
@@ -33,6 +34,3 @@ helper.txt
 *.iml
 .vscode
 .idea
-
-# Used by the Clippy build script
-min_version.txt

clippy_dev/.gitignore

@@ -1,38 +0,0 @@
-# Used by Travis to be able to push:
-/.github/deploy_key
-out
-
-# Compiled files
-*.o
-*.d
-*.so
-*.rlib
-*.dll
-*.pyc
-*.rmeta
-
-# Executables
-*.exe
-
-# Generated by Cargo
-Cargo.lock
-/target
-/clippy_lints/target
-/clippy_workspace_tests/target
-
-# Generated by dogfood
-/target_recur/
-
-# gh pages docs
-util/gh-pages/lints.json
-
-# rustfmt backups
-*.rs.bk
-
-helper.txt
-*.iml
-.vscode
-.idea
-
-# Used by the Clippy build script
-min_version.txt