Revert "Amend tests for applying diffs with special object ordering"

This reverts commit 1c62771.

See osmcode/libosmium#403

Author: joto

test/apply-changes/input-version+timestamp.osm

@@ -6,7 +6,6 @@
   </node>
   <node id="2" version="2" timestamp="2017-01-03T00:00:00Z" lat="50" lon="10.01"/>
   <node id="3" version="1" timestamp="2017-01-03T00:00:00Z" lat="50" lon="10.02"/>
-  <node id="5" version="1" timestamp="2017-01-03T00:00:00Z" lat="50" lon="10.03"/>
   <way id="1" version="1" timestamp="2017-01-03T00:00:00Z">
     <nd ref="1"/>
     <nd ref="2"/>

test/apply-changes/input-version.osc

@@ -9,9 +9,6 @@
   <delete>
     <node id="3" version="1" visible="false"/>
   </delete>
-  <delete>
-    <node id="5" version="2" visible="false"/>
-  </delete>
   <create>
     <node id="4" version="1" lat="50.0" lon="10.02"/>
   </create>

test/apply-changes/output-version-applied-on-version+timestamp.osm

@@ -5,7 +5,6 @@
     <tag k="name" v="School"/>
   </node>
   <node id="2" version="2" timestamp="2017-01-03T00:00:00Z" lat="50" lon="10.01"/>
-  <node id="3" version="1" timestamp="2017-01-03T00:00:00Z" lat="50" lon="10.02"/>
   <node id="4" version="1" lat="50" lon="10.02"/>
   <way id="1" version="2">
     <nd ref="1"/>