Remove version checks for _MSC_VER < 1800 (msvs2013).

src/core/SkRegion.cpp

Index: src/core/SkRegion.cpp
diff --git a/src/core/SkRegion.cpp b/src/core/SkRegion.cpp
index 3a542c616976d65c632af828596afe9b6a629735..ba6658182aa0a3e66e817a0bfa59a24cb227fcdc 100644
--- a/src/core/SkRegion.cpp
+++ b/src/core/SkRegion.cpp
@@ -599,7 +599,7 @@ bool SkRegion::setRects(const SkIRect rects[], int count) {
 
 ///////////////////////////////////////////////////////////////////////////////
 
-#if defined _WIN32 && _MSC_VER >= 1300  // disable warning : local variable used without having been initialized
+#if defined _WIN32  // disable warning : local variable used without having been initialized
 #pragma warning ( push )
 #pragma warning ( disable : 4701 )
 #endif
@@ -737,7 +737,7 @@ static SkRegion::RunType* operate_on_span(const SkRegion::RunType a_runs[],
     return dst;
 }
 
-#if defined _WIN32 && _MSC_VER >= 1300
+#if defined _WIN32
 #pragma warning ( pop )
 #endif