Remove unnecessary NodeFilterCondition.cpp file

Source/core/core.gypi

 {
     'includes': [
       'core_generated.gypi',
     ],
     'variables': {
         # Files for which bindings (.cpp and .h files) will be generated
         'core_idl_files': [
             'animation/Animation.idl',
             'animation/AnimationEffect.idl',
             'animation/AnimationPlayer.idl',
@@ skipping 2050 matching lines @@
             'dom/MutationRecord.cpp',
             'dom/MutationRecord.h',
             'dom/NameNodeList.cpp',
             'dom/NameNodeList.h',
             'dom/NamedNodeMap.cpp',
             'dom/Node.cpp',
             'dom/NodeChildRemovalTracker.cpp',
             'dom/NodeChildRemovalTracker.h',
             'dom/NodeFilter.cpp',
             'dom/NodeFilter.h',
-            'dom/NodeFilterCondition.cpp',
             'dom/NodeFilterCondition.h',
             'dom/NodeIterator.cpp',
             'dom/NodeIterator.h',
             'dom/NodeIteratorBase.cpp',
             'dom/NodeIteratorBase.h',
             'dom/NodeListsNodeData.cpp',
             'dom/NodeListsNodeData.h',
             'dom/NodeRareData.cpp',
             'dom/NodeRareData.h',
             'dom/NodeRenderStyle.h',
@@ skipping 1382 matching lines @@
             'rendering/shapes/BoxShapeTest.cpp',
             'rendering/style/OutlineValueTest.cpp',
             'testing/PrivateScriptTestTest.cpp',
             'streams/ReadableStreamTest.cpp',
             'testing/UnitTestHelpers.cpp',
             'testing/UnitTestHelpers.h',
             'xml/parser/SharedBufferReaderTest.cpp',
         ],
     }
 }