Czech Tutorial.lyx: reset fileformat

please don't change the fileformat if not necessary (only necessary to describe new features in LyX 2.1). This helps me a lot keeping all language and release versions in sync and to update all

diff --git a/lib/doc/cs/Tutorial.lyx b/lib/doc/cs/Tutorial.lyx
index 3317595df480d68fb97d381c3fa538a5c970f4c9..a12c519d41126433a86607f5045a6f2ace6c3780 100644 (file)
--- a/lib/doc/cs/Tutorial.lyx
+++ b/lib/doc/cs/Tutorial.lyx
@@ -1,5 +1,5 @@
 #LyX 2.1 created this file. For more info see http://www.lyx.org/
-\lyxformat 445
+\lyxformat 413
 \begin_document
 \begin_header
 \textclass book
@@ -39,7 +39,6 @@
 \font_roman default
 \font_sans default
 \font_typewriter default
-\font_math auto
 \font_default_family default
 \use_non_tex_fonts false
 \font_sc false
@@ -70,21 +69,15 @@
 \pdf_quoted_options "linkcolor=black, citecolor=black, urlcolor=blue, filecolor=blue,pdfpagelayout=OneColumn, pdfnewwindow=true, pdfstartview=XYZ, plainpages=false"
 \papersize default
 \use_geometry false
-\use_package amsmath 0
-\use_package amssymb 0
-\use_package esint 0
-\use_package mathdots 1
-\use_package mathtools 0
-\use_package mhchem 1
-\use_package undertilde 0
+\use_amsmath 0
+\use_esint 0
+\use_mathdots 1
+\use_mhchem 1
 \cite_engine basic
-\cite_engine_type numerical
-\biblio_style plain
 \use_bibtopic false
 \use_indices false
 \paperorientation portrait
 \suppress_date false
-\justification true
 \use_refstyle 0
 \index Index
 \shortcut idx
@@ -2618,7 +2611,7 @@ Uživatelské příručce.
 \align center
 \begin_inset Tabular
 <lyxtabular version="3" rows="7" columns="2">
-<features rotate="0" tabularvalignment="middle">
+<features tabularvalignment="middle">
 <column alignment="center" valignment="top" width="0pt">
 <column alignment="center" valignment="top" width="0pt">
 <row>