Remove which command from default image

* This was a script relying on a working /etc/profile, which may not be
there
 * Instead, use GNU which, available as an haikuport recipe
 * Since the command does not seem to be needed for Haiku to run (and
also because I don't know how to do it), GNU which isn't in the default
 install.
 * Typing "which" in a terminal still works, as that uses an alias
defined directly in /etc/profile.

src/data/package_infos/arm/haiku

@@ -164,7 +164,6 @@ provides {
 	cmd:watch
 	cmd:wc
 	cmd:wget = 1.12
-	cmd:which
 	cmd:whoami
 	cmd:xargs
 	cmd:xres

src/data/package_infos/m68k/haiku

@@ -164,7 +164,6 @@ provides {
 	cmd:watch
 	cmd:wc
 	cmd:wget = 1.12
-	cmd:which
 	cmd:whoami
 	cmd:xargs
 	cmd:xres

src/data/package_infos/ppc/haiku

@@ -164,7 +164,6 @@ provides {
 	cmd:watch
 	cmd:wc
 	cmd:wget = 1.12
-	cmd:which
 	cmd:whoami
 	cmd:xargs
 	cmd:xres

src/data/package_infos/x86/haiku

@@ -164,7 +164,6 @@ provides {
 	cmd:watch
 	cmd:wc
 	cmd:wget = 1.12
-	cmd:which
 	cmd:whoami
 	cmd:xargs
 	cmd:xres

src/data/package_infos/x86_64/haiku

@@ -164,7 +164,6 @@ provides {
 	cmd:watch
 	cmd:wc
 	cmd:wget = 1.12
-	cmd:which
 	cmd:whoami
 	cmd:xargs
 	cmd:xres

src/data/package_infos/x86_gcc2/haiku

@@ -164,7 +164,6 @@ provides {
 	cmd:watch
 	cmd:wc
 	cmd:wget = 1.12
-	cmd:which
 	cmd:whoami
 	cmd:xargs
 	cmd:xres