fish: remove version check for fish v4

fish/conf.d/abbr.fish

@@ -24,10 +24,5 @@ abbr -a gr 'git restore'
 abbr -a gs 'git status'
 abbr -a gst 'git stash'
 abbr -a gsw 'git switch'
-
-set -l major_version (string sub --length 1 $version)
-
-if test $major_version -ge 4
-    abbr -a --command git rbi 'rebase --interactive'
-    abbr -a --command git wipe 'restore --staged --worktree'
-end
+abbr -a --command git rbi 'rebase --interactive'
+abbr -a --command git wipe 'restore --staged --worktree'

fish/config.fish

@@ -23,7 +23,6 @@ if status --is-interactive
     set -g __fish_git_prompt_showupstream informative
     set -g __fish_git_prompt_char_upstream_ahead '↑'
     set -g __fish_git_prompt_char_upstream_behind '↓'
-    set -g __fish_git_prompt_char_upstream_prefix ' '
     set -g __fish_git_prompt_color_branch magenta
     set -g __fish_git_prompt_color_dirtystate cyan
     set -g __fish_git_prompt_color_invalidstate red
@@ -33,16 +32,9 @@ if status --is-interactive
     set -g __fish_git_prompt_color_upstream yellow
 
     # Bindings
-    set -l major_version (string sub --length 1 $version)
-    if test $major_version -ge 4
     bind ctrl-q fkill
     bind ctrl-p __fzf_files
     bind ctrl-g __fzf_git_log
-    else
-        bind \cq fkill
-        bind \cp __fzf_files
-        bind \cg __fzf_git_log
-    end
 
     # You can get the cancelled command with ctrl-z now
     #bind ctrl-c __fish_cancel_commandline
@@ -51,18 +43,10 @@ if status --is-interactive
     if command -q atuin
         atuin init fish --disable-up-arrow | source
     else
-        if test $major_version -ge 4
         bind ctrl-r __fzf_history
-        else
-            bind \cr __fzf_history
-        end
     end
 
     # By default, Ctrl+L clears the screen
     # Add binding Ctrl+Alt+L to clear screen AND scrollback buffer
-    if test $major_version -ge 4
     bind ctrl-alt-l 'clear; commandline -f repaint'
-    else
-        bind \e\f 'clear; commandline -f repaint'
-    end
 end