Don't check whether gnuplot is present in $PATH, because we know it is.

diff --git a/eazy-gnuplot.asd b/eazy-gnuplot.asd
index 7b1c09b..4657cd6 100644
--- a/eazy-gnuplot.asd
+++ b/eazy-gnuplot.asd
@@ -37,7 +37,4 @@
                                :fill-pointer t)))
           (setf (fill-pointer seq) (read-sequence seq stream))
           seq)))
-  :perform (load-op :before (op c)
-                    (unless (zerop (nth-value 2 (uiop:run-program "which gnuplot" :ignore-error-status t)))
-                      (warn "Could not find GNUPLOT in $PATH")))
   :in-order-to ((test-op (test-op eazy-gnuplot.test))))
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<tr><td><span title='2024-04-16 22:20:40 +0100'>2024-04-16</span></td><td><a href='/guix/commit/gnu/packages/markup.scm?id=6a6dde505888bb1aff84bb02480f94312ac2989f'>gnu: Add latexml.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/markup.scm (latexml): New variable.

Reviewed-by: Steve George &lt;steve@futurile.net&gt;

Change-Id: If7199a8b74b990ad29718adcb905a5ed31882cf5
Signed-off-by: Christopher Baines &lt;mail@cbaines.net&gt;
</span></span></td><td>Nicolas Graves via Guix-patches via</td></tr>
<tr><td><span title='2024-03-31 07:37:17 -0300'>2024-03-31</span></td><td><a href='/guix/commit/gnu/packages/markup.scm?id=43ed834127efb86282856e0e3940735de94bee39'>gnu: python-mistletoe: Update to 1.3.0.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/markup.scm (python-mistletoe): Update to 1.3.0.
[build-system]: Use pyproject-build-system.
[arguments]: Do not override the check phase, skip one test in #:test-flags.
[native-inputs]: Add python-parameterized, python-pytest.

Change-Id: If25e3cbe19d8936d150c830f1b8f4ce8f8cb5692
</span></span></td><td>Vinicius Monego</td></tr>
<tr><td><span title='2024-03-09 11:30:23 +0800'>2024-03-09</span></td><td><a href='/guix/commit/gnu/packages/markup.scm?id=3db5702e0b6dd6bf8966a26745efcd62a07df84a'>gnu: cmark: Update to 0.31.0.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/markup.scm (cmark): Update to 0.31.0.

Change-Id: Ie9890dec34400e2c4b11f20e2dc67aa5dc111574
Signed-off-by: 宋文武 &lt;iyzsong@member.fsf.org&gt;
</span></span></td><td>Skylar Chan</td></tr>