gitignore: Cleanup

.gitignore

@@ -1,20 +1,6 @@
-# We filter only autotools artefacts.
 # Use a separate build directory!
-# For other purposes adjust "$XDG_CONFIG_HOME/git/ignore!
+# Have a look at https://wiki.gnucash.org/wiki/Documentation_Improvement#Initial_Steps.
+#
+# If /your/ tools add files into the source tree, adjust /your/ "$XDG_CONFIG_HOME/git/ignore"
+# or "$GIT_DIR/info/exclude" as described at https://git-scm.com/docs/gitignore!
 
-#absolute:
-/INSTALL
-/aclocal.m4
-/autom4te.cache/
-/config.guess
-/config.sub
-/configure
-/install-sh
-/ltmain.sh
-/missing
-/build
-/guide/pt/Auxiliary files/
-/home/pmra/Documents/6.Translations/GnuCash/gnucash-docs/gnucash-docs/guide/pt/figures100
-
-#relative:
-Makefile.in