Delete buildrequires gnuplot because the package license is not allow

(cherry picked from commit 212f4b9935ecdad4c25609a1558e5f9c623802a2)

leptonica.spec

@@ -1,6 +1,6 @@
 Name:                leptonica
 Version:             1.83.1
-Release:             2
+Release:             3
 Summary:             C library for efficient image processing and image analysis operations
 License:             Leptonica
 URL:                 https://github.com/danbloomberg/leptonica
@@ -9,7 +9,7 @@ Patch0:              add-pix_internal.h-to-alltypes.h.patch
 
 BuildRequires:       gcc automake autoconf libtool giflib-devel libjpeg-devel libpng-devel
 BuildRequires:       libtiff-devel libwebp-devel zlib-devel
-BuildRequires:       gnuplot make
+BuildRequires:       make
 %description
 The library supports many operations that are useful on
  * Document images
@@ -74,6 +74,9 @@ make check VERBOSE=1
 %{_bindir}/*
 
 %changelog
+* Fri Sep 06 2024 wangkai <13474090681@163.com> - 1.83.1-3
+- Delete buildrequires gnuplot because the package license is not allow
+
 * Tue Sep 26 2023 peijiankang <peijiankang@kylinos.cn> - 1.83.1-2
 - add add-pix_internal.h-to-alltypes.h.patch