Remove explicit disabled icons from org.eclipse.ui.editors

Use on-the-fly-generated disabled version of SVG-rasterized icons
instead.

Author: HeikoKlare

bundles/org.eclipse.ui.editors/plugin.xml

@@ -152,7 +152,6 @@
    <extension point="org.eclipse.ui.commandImages">
       <image
             commandId="org.eclipse.ui.edit.text.folding.collapse_all"
-            disabledIcon="$nl$/icons/full/dlcl16/collapseall.png"
             icon="$nl$/icons/full/elcl16/collapseall.svg">
       </image>
       <image
@@ -511,7 +510,6 @@
                toolbarPath="org.eclipse.ui.workbench.navigate/history.group"
                class="org.eclipse.ui.internal.editors.text.PreviousPulldownActionDelegate"
                definitionId="org.eclipse.ui.navigate.previous"
-               disabledIcon="$nl$/icons/full/dtool16/prev_nav.png"
                icon="$nl$/icons/full/etool16/prev_nav.svg"
                label="%goToPreviousAnnotation.label"
                retarget="true"
@@ -524,7 +522,6 @@
                toolbarPath="org.eclipse.ui.workbench.navigate/history.group"
                class="org.eclipse.ui.internal.editors.text.NextPulldownActionDelegate"
                definitionId="org.eclipse.ui.navigate.next"
-               disabledIcon="$nl$/icons/full/dtool16/next_nav.png"
                icon="$nl$/icons/full/etool16/next_nav.svg"
                label="%goToNextAnnotation.label"
                retarget="true"
@@ -540,7 +537,6 @@
                id="org.eclipse.ui.edit.text.gotoNextEditPosition"
                class="org.eclipse.ui.texteditor.GotoNextEditPositionAction"
                definitionId="org.eclipse.ui.edit.text.gotoNextEditPosition"
-               disabledIcon="$nl$/icons/full/dtool16/next_edit_pos.png"
                icon="$nl$/icons/full/etool16/next_edit_pos.png"
                helpContextId="org.eclipse.ui.goto_next_edit_position_action_context"
                label="%goToNextEditPosition.label"
@@ -553,7 +549,6 @@
                id="org.eclipse.ui.edit.text.gotoLastEditPosition"
                class="org.eclipse.ui.texteditor.GotoLastEditPositionAction"
                definitionId="org.eclipse.ui.edit.text.gotoLastEditPosition"
-               disabledIcon="$nl$/icons/full/dtool16/last_edit_pos.png"
                icon="$nl$/icons/full/etool16/last_edit_pos.svg"
                helpContextId="org.eclipse.ui.goto_last_edit_position_action_context"
                label="%goToLastEditPosition.label"