pkgconfig file: remove extra comments

Remove extra comments about CMake build. Before the comments were
included in the generated .pc file. Based on a short sample, most
projects pkgconfig files don't start with any extra comments.

Signed-off-by: Eero Aaltonen <eero.aaltonen@vaisala.com>
Acked-by: Jerome Forissier <jerome.forissier@linaro.org>
Acked-by: Etienne Carriere <etienne.carriere@foss.st.com>
diff --git a/libteec/libteec.pc.in b/libteec/libteec.pc.in
index f6fc530..e91e690 100644
--- a/libteec/libteec.pc.in
+++ b/libteec/libteec.pc.in
@@ -1,10 +1,3 @@
-# this template is filled-in by CMake `configure_file(... @ONLY)`
-# the `@....@` are filled in by CMake configure_file(), 
-# from variables set in your CMakeLists.txt or by CMake itself
-#
-# Good tutoral for understanding .pc files: 
-# https://people.freedesktop.org/~dbn/pkg-config-guide.html
-
 prefix="@CMAKE_INSTALL_PREFIX@"
 exec_prefix="${prefix}"
 libdir="${prefix}/lib"