Manpage: remove `brew install --force`.

Closes Homebrew/homebrew#17654.

Library/Contributions/manpages/brew.1.md

@@ -140,15 +140,12 @@ Note that these flags should only appear after a command.
   * `info` <URL>:
     Print the name and version that will be detected for <URL>.
 
-  * `install [--force] [--debug] [--ignore-dependencies] [--fresh] [--use-clang] [--use-gcc] [--use-llvm] [--build-from-source] [--devel] [--HEAD]` <formula>:
+  * `install [--debug] [--ignore-dependencies] [--fresh] [--use-clang|--use-gcc|--use-llvm] [--build-from-source] [--devel|--HEAD]` <formula>:
     Install <formula>.
 
     <formula> is usually the name of the formula to install, but it can be specified
     several different ways. See [SPECIFYING FORMULAE][].
 
-    If `--force` is passed, will install <formula> if it exists, even if it
-    is blacklisted.
-
     If `--debug` is passed and brewing fails, open a shell inside the
     temporary directory used for compiling.
 
@@ -176,8 +173,7 @@ Note that these flags should only appear after a command.
     aka master, trunk, unstable.
 
     To install a newer version of HEAD use
-    `brew rm <foo> && brew install --HEAD <foo>`
-    or `brew install --force --HEAD <foo>`.
+    `brew rm <foo> && brew install --HEAD <foo>`.
 
   * `install --interactive [--git]` <formula>:
     Download and patch <formula>, then open a shell. This allows the user to

share/man/man1/brew.1

 .\" generated with Ronn/v0.7.3
 .\" http://github.com/rtomayko/ronn/tree/0.7.3
 .
-.TH "BREW" "1" "January 2013" "Homebrew" "brew"
+.TH "BREW" "1" "February 2013" "Homebrew" "brew"
 .
 .SH "NAME"
 \fBbrew\fR \- The missing package manager for OS X
@@ -161,16 +161,13 @@ To view formula history locally: \fBbrew log \-p <formula>\fR\.
 Print the name and version that will be detected for \fIURL\fR\.
 .
 .TP
-\fBinstall [\-\-force] [\-\-debug] [\-\-ignore\-dependencies] [\-\-fresh] [\-\-use\-clang] [\-\-use\-gcc] [\-\-use\-llvm] [\-\-build\-from\-source] [\-\-devel] [\-\-HEAD]\fR \fIformula\fR
+\fBinstall [\-\-debug] [\-\-ignore\-dependencies] [\-\-fresh] [\-\-use\-clang|\-\-use\-gcc|\-\-use\-llvm] [\-\-build\-from\-source] [\-\-devel|\-\-HEAD]\fR \fIformula\fR
 Install \fIformula\fR\.
 .
 .IP
 \fIformula\fR is usually the name of the formula to install, but it can be specified several different ways\. See \fISPECIFYING FORMULAE\fR\.
 .
 .IP
-If \fB\-\-force\fR is passed, will install \fIformula\fR if it exists, even if it is blacklisted\.
-.
-.IP
 If \fB\-\-debug\fR is passed and brewing fails, open a shell inside the temporary directory used for compiling\.
 .
 .IP
@@ -198,7 +195,7 @@ If \fB\-\-devel\fR is passed, and \fIformula\fR defines it, install the developm
 If \fB\-\-HEAD\fR is passed, and \fIformula\fR defines it, install the HEAD version, aka master, trunk, unstable\.
 .
 .IP
-To install a newer version of HEAD use \fBbrew rm <foo> && brew install \-\-HEAD <foo>\fR or \fBbrew install \-\-force \-\-HEAD <foo>\fR\.
+To install a newer version of HEAD use \fBbrew rm <foo> && brew install \-\-HEAD <foo>\fR\.
 .
 .TP
 \fBinstall \-\-interactive [\-\-git]\fR \fIformula\fR