Revert "add DeviceInfo"

This reverts commit b2442896e3a226c7ebe9d47fa80b257e98a6a34d.

Change-Id: I50f6555451f71067505245333c8e558b5e3b2b3b
diff --git a/libs/hwui/utils/StringUtils.h b/libs/hwui/utils/StringUtils.h
index 28b3d63..ef2a6d5 100644
--- a/libs/hwui/utils/StringUtils.h
+++ b/libs/hwui/utils/StringUtils.h
@@ -22,16 +22,12 @@
 namespace android {
 namespace uirenderer {
 
-class unordered_string_set : public std::unordered_set<std::string> {
+class StringCollection {
 public:
-    bool has(const char* str) {
-        return find(std::string(str)) != end();
-    }
-};
-
-class StringUtils {
-public:
-    static unordered_string_set&& split(const char* spacedList);
+    StringCollection(const char* spacedList);
+    bool has(const char* string);
+private:
+    std::unordered_set<std::string> mSet;
 };
 
 } /* namespace uirenderer */