Remove excess newlines

A ridiculously fast way of doing this is:

for i in $(pcregrep -l -M -r --include='.*[hc]xx$' \
  --exclude-dir=workdir --exclude-dir=instdir '^
{3,}' .)
do
    perl -0777 -i -pe 's/^
{3,}/

/gm' $i
done

Change-Id: Iebb93eccbee9e4fc5c4380474ba595858a27ac2c
Reviewed-on: https://gerrit.libreoffice.org/22224
Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Chris Sherlock <chris.sherlock79@gmail.com>

cppcanvas/source/mtfrenderer/implrenderer.cxx

@@ -1255,7 +1255,6 @@ namespace cppcanvas
                     // are all handled locally.
 
 
-
                     case MetaActionType::PUSH:
                     {
                         MetaPushAction* pPushAction = static_cast<MetaPushAction*>(pCurrAct);
@@ -1536,14 +1535,12 @@ namespace cppcanvas
                     break;
 
 
-
                     // In the second part of this monster-switch, we
                     // handle all recursing meta actions. These are the
                     // ones generating a metafile by themselves, which is
                     // then processed by recursively calling this method.
 
 
-
                     case MetaActionType::GRADIENT:
                     {
                         MetaGradientAction* pGradAct = static_cast<MetaGradientAction*>(pCurrAct);
@@ -1801,14 +1798,12 @@ namespace cppcanvas
                     break;
 
 
-
                     // In the third part of this monster-switch, we
                     // handle all 'acting' meta actions. These are all
                     // processed by constructing function objects for
                     // them, which will later ease caching.
 
 
-
                     case MetaActionType::POINT:
                     {
                         const OutDevState& rState( rStates.getState() );