chore: remove all ftdetect with official support in Neovim/Vim

after/ftdetect/foam.vim

@@ -1,26 +0,0 @@
-" Last Change: 2022 Jan 08
-
-function! s:foamFile(path)
-    " Return if file type already set
-    if (&filetype == 'foam')
-        return
-    endif
-
-    let l:lines = getline(1, 15)
-    let l:f = -1
-    let l:o = -1
-    for line in lines
-        if (match(line, '\CFoamFile') >= 0)
-            let l:f = index(lines, line)
-        endif
-        if (match(line, '\Cobject') >= 0)
-            let l:o = index(lines, line)
-        endif
-    endfor
-    if ((l:o >= 0) && (l:f >= 0) && (l:o > l:f))
-        set filetype=foam
-    endif
-endfunction
-
-autocmd FileType cpp call s:foamFile(expand("%"))
-autocmd BufNewFile,BufRead *Dict,*Properties,fvSchemes,fvSolution,*/constant/g,*/0/* call s:foamFile(expand("%"))

ftdetect/elixir.vim

@@ -1,2 +0,0 @@
-au BufRead,BufNewFile *.ex,*.exs,mix.lock set filetype=elixir
-au BufRead,BufNewFile *.eex,*.leex set filetype=eelixir

ftdetect/fennel.vim

@@ -1 +0,0 @@
-autocmd BufRead,BufNewFile *.fnl set filetype=fennel

ftdetect/fish.vim

@@ -1,5 +0,0 @@
-autocmd BufRead,BufNewFile *.fish setfiletype fish
-autocmd BufRead *
-  \ if getline(1) =~# '\v^#!%(\f*/|/usr/bin/env\s*<)fish>' |
-  \   setfiletype fish |
-  \ endif

ftdetect/gomod.vim

@@ -1 +0,0 @@
-au BufRead,BufNewFile go.mod set filetype=gomod

ftdetect/julia.vim

@@ -1 +0,0 @@
-autocmd BufRead,BufNewFile *.jl setfiletype julia

ftdetect/zig.vim

@@ -1 +0,0 @@
-autocmd BufRead,BufNewFile *.zig set filetype=zig