Remove reference to prof-m

Closes #1147

Author: coke

doc/Language/performance.pod6

@@ -26,24 +26,6 @@ to write lines like:
 The C<now> to the left of C<INIT> runs 0.0018558 seconds I<later> than the C<now> to the right of the C<INIT>
 because the latter occurs during L<the INIT phase|/language/phasers#INIT>.
 
-=head2 Profile with C<prof-m: your code goes here>
-
-Enter C<prof-m: your code goes here> in the L<#perl6 channel|/language/glossary#IRC>
-to invoke a Perl 6 compiler with a C<--profile> option.
-The evalbot's output includes a link to L<profile info|https://en.wikipedia.org/wiki/Profiling_(computer_programming)>:
-
-=begin code :allow< L >
-
-    yournick prof-m: say 'hello world'
-    camelia  prof-m 273e89: OUTPUT«hello world␤...»
-             .. Prof: L<http://p.p6c.org/20f9e25>
-
-=end code
-
-Click on the profile info link to see a profile for C<say 'hello world'>.
-
-To learn how to interpret the profile info, ask questions on channel.
-
 =head2 Profile locally
 
 When using the L<MoarVM|http://moarvm.org> backend the L<Rakudo|http://rakudo.org> compiler's C<--profile>