refactor(gitignore): remove old ignore entries

.gitignore

@@ -1,29 +1,15 @@
 *~
 \#*
 .#*
-.lean_trace
-*.produced.out
-*.md.lua
-*.md.lean
 *.olean
-*.clean
-*.ilean
-*.d
 *.lock
-a.out
 build
 GPATH
 GRTAGS
 GSYMS
 GTAGS
-Makefile
-*.cmake
-CMakeFiles/
 .projectile
-.coveralls.yml
 .lean_options
-doc/html
-make.deps
 src/emacs/dependencies
 compile_commands.json
 *.idea

bin/.gitignore

@@ -2,6 +2,3 @@ lean
 lean.exe
 leanemacs
 leanemacs.bat
-linja
-python_lib/six.pyc
-python_lib/__init__.pyc

library/.gitignore

@@ -1,4 +0,0 @@
-TAGS
-build.ninja
-.ninja_deps
-.ninja_log

old_library/.gitignore

@@ -1,4 +0,0 @@
-TAGS
-build.ninja
-.ninja_deps
-.ninja_log

tests/.gitignore

@@ -0,0 +1 @@
+*.produced.out