remove brew info --all

Closes Homebrew/homebrew#27322.

Library/Contributions/manpages/brew.1.md

@@ -141,11 +141,9 @@ Note that these flags should only appear after a command.
   * `home` <formula>:
     Open <formula>'s homepage in a browser.
 
-  * `info [--all]` <formula>:
+  * `info <formula>:
     Display information about <formula>.
 
-    If `--all` is passed, show info for all formulae.
-
   * `info --github` <formula>:
     Open a browser to the GitHub History page for formula <formula>.
 

Library/Homebrew/cmd/info.rb

@@ -20,12 +20,7 @@ module Homebrew extend self
 
   def print_info
     if ARGV.named.empty?
-      if ARGV.include? "--all"
-        Formula.each do |f|
-          info_formula f
-          puts '---'
-        end
-      elsif HOMEBREW_CELLAR.exist?
+      if HOMEBREW_CELLAR.exist?
         puts "#{HOMEBREW_CELLAR.children.length} kegs, #{HOMEBREW_CELLAR.abv}"
       end
     else

share/man/man1/brew.1

@@ -159,12 +159,9 @@ Open Homebrew\'s own homepage in a browser\.
 Open \fIformula\fR\'s homepage in a browser\.
 .
 .TP
-\fBinfo [\-\-all]\fR \fIformula\fR
+`info \fIformula\fR
 Display information about \fIformula\fR\.
 .
-.IP
-If \fB\-\-all\fR is passed, show info for all formulae\.
-.
 .TP
 \fBinfo \-\-github\fR \fIformula\fR
 Open a browser to the GitHub History page for formula \fIformula\fR\.