Remove CSS_STICKY_POSITION guards

Remove CSS_STICKY_POSITION guards
https://bugs.webkit.org/show_bug.cgi?id=132676

Patch by Tibor Meszaros <tmeszaros.u-szeged@partner.samsung.com> on 2014-05-14
Reviewed by Simon Fraser.

.:
* Source/cmake/OptionsEfl.cmake:
* Source/cmake/OptionsGTK.cmake:
* Source/cmake/WebKitFeatures.cmake:
* Source/cmakeconfig.h.cmake:

Source/JavaScriptCore:
* Configurations/FeatureDefines.xcconfig:

Source/WebCore:
* Configurations/FeatureDefines.xcconfig:
* css/CSSParser.cpp:
(WebCore::isValidKeywordPropertyAndValue):
* css/CSSPrimitiveValueMappings.h:
(WebCore::CSSPrimitiveValue::CSSPrimitiveValue):
(WebCore::CSSPrimitiveValue::operator EPosition):
* css/CSSValueKeywords.in:
* editing/EditingStyle.cpp:
(WebCore::EditingStyle::convertPositionStyle):

Source/WebKit/mac:
* Configurations/FeatureDefines.xcconfig:

Source/WebKit2:
* Configurations/FeatureDefines.xcconfig:

Source/WTF:
* wtf/FeatureDefines.h:

Tools:
* Scripts/webkitperl/FeatureList.pm:

WebKitLibraries:
* win/tools/vsprops/FeatureDefines.props:
* win/tools/vsprops/FeatureDefinesCairo.props:

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@168839 268f45cc-cd09-0410-ab3c-d52691b4dbfc