[pass] [PATCH] Remove mention of the GREP_OPTIONS environment variable.

[Anthony J. Bentley]

GREP_OPTIONS is not defined by POSIX and is not portable to non-GNU
systems. Even in GNU grep the variable is deprecated:

GREP_OPTIONS
       This variable specifies default options to be placed in front of
       any explicit options.  As this causes problems when writing
       portable scripts, this feature will be removed in a future
       release of grep, and grep warns if it is used.  Please use an
       alias or script instead.

diff --git a/man/pass.1 b/man/pass.1
index e1fe605..5d7e8cf 100644
--- a/man/pass.1
+++ b/man/pass.1
@@ -78,8 +78,7 @@ program. This command is alternatively named \fBlist\fP.
 Searches inside each decrypted password file for \fIsearch-string\fP, and displays line
 containing matched string along with filename. Uses
 .BR grep (1)
-for matching. Make use of the \fIGREP_OPTIONS\fP environment variable to set particular
-options.
+for matching.
 .TP
 \fBfind\fP \fIpass-names\fP...
 List names of passwords inside the tree that match \fIpass-names\fP by using the