Remove the redundant fix_buffer_data vars and filename variables

autoload/ale.vim

@@ -192,12 +192,7 @@ endfunction
 " Every variable name will be prefixed with 'ale_'.
 function! ale#Var(buffer, variable_name) abort
     let l:full_name = 'ale_' . a:variable_name
-    let l:vars = getbufvar(str2nr(a:buffer), '', 0)
-
-    if l:vars is 0
-        " Look for variables from deleted buffers, saved from :ALEFix
-        let l:vars = get(get(g:ale_fix_buffer_data, a:buffer, {}), 'vars', {})
-    endif
+    let l:vars = getbufvar(str2nr(a:buffer), '', {})
 
     return get(l:vars, l:full_name, g:[l:full_name])
 endfunction

autoload/ale/fix.vim

@@ -420,9 +420,7 @@ function! ale#fix#InitBufferData(buffer, fixing_flag) abort
     " The 'done' flag tells the function for applying changes when fixing
     " is complete.
     let g:ale_fix_buffer_data[a:buffer] = {
-    \   'vars': getbufvar(a:buffer, ''),
     \   'lines_before': getbufline(a:buffer, 1, '$'),
-    \   'filename': expand('#' . a:buffer . ':p'),
     \   'done': 0,
     \   'should_save': a:fixing_flag is# 'save_file',
     \   'temporary_directory_list': [],

test/fix/test_ale_fix.vader

@@ -552,8 +552,6 @@ Execute(ale#fix#InitBufferData() should set up the correct data):
   AssertEqual {
   \ bufnr(''): {
   \   'temporary_directory_list': [],
-  \   'vars': b:,
-  \   'filename': ale#path#Simplify(getcwd() . '/fix_test_file'),
   \   'done': 0,
   \   'lines_before': ['a', 'b', 'c'],
   \   'should_save': 1,

test/test_ale_var.vader

@@ -5,8 +5,6 @@ After:
   unlet! g:ale_some_variable
   unlet! b:undefined_variable_name
 
-  let g:ale_fix_buffer_data = {}
-
 Execute(ale#Var should return global variables):
   AssertEqual 'abc', ale#Var(bufnr(''), 'some_variable')
 
@@ -24,13 +22,3 @@ Execute(ale#Var should throw exceptions for undefined variables):
   let b:undefined_variable_name = 'def'
 
   AssertThrows call ale#Var(bufnr(''), 'undefined_variable_name')
-
-Execute(ale#Var return variables from deleted buffers, saved for fixing things):
-  let g:ale_fix_buffer_data[1347347] = {'vars': {'ale_some_variable': 'def'}}
-
-  AssertEqual 'def', ale#Var(1347347, 'some_variable')
-
-Execute(ale#Var should return the global variable for unknown variables):
-  let g:ale_fix_buffer_data = {}
-
-  AssertEqual 'abc', ale#Var(1347347, 'some_variable')