Remove reference to unicode-math in pgf preamble.

anntzer · anntzer · commit 6bfde8d83300 · 2020-11-25T10:16:15.000+01:00
This used to be required to support unicode minus, but we now strip
out the minuses ourselves.
diff --git a/lib/matplotlib/backends/backend_pgf.py b/lib/matplotlib/backends/backend_pgf.py
@@ -792,9 +792,6 @@ def _print_pgf_to_fh(self, fh, *, bbox_inches_restore=None):
 %% Make sure the required packages are loaded in your preamble
 %%   \\usepackage{pgf}
 %%
-%% and on luatex and xetex
-%%   \\usepackage{unicode-math}
-%%
 %% Figures using additional raster images can only be included by \\input if
 %% they are in the same directory as the main LaTeX file. For loading figures
 %% from other directories you can use the `import` package
