Remove support for Android API < 23 in TextAttributeProps

Summary:
Since minsdk version was increased to 23, we are deleting code using Android APIs < 23 for class TextAttributeProps

chnagelog: [Android][Breaking] Remove support for Android API < 23 in TextAttributeProps

Differential Revision: D48545514

fbshipit-source-id: 236bada9d363e28d4d7fd986ae1a1c030cd4e2bd

packages/react-native/ReactAndroid/src/main/java/com/facebook/react/views/text/TextAttributeProps.java

@@ -73,10 +73,8 @@ public class TextAttributeProps {
   private static final int DEFAULT_TEXT_SHADOW_COLOR = 0x55000000;
   private static final int DEFAULT_JUSTIFICATION_MODE =
       (Build.VERSION.SDK_INT < Build.VERSION_CODES.O) ? 0 : Layout.JUSTIFICATION_MODE_NONE;
-  private static final int DEFAULT_BREAK_STRATEGY =
-      (Build.VERSION.SDK_INT < Build.VERSION_CODES.M) ? 0 : Layout.BREAK_STRATEGY_HIGH_QUALITY;
-  private static final int DEFAULT_HYPHENATION_FREQUENCY =
-      (Build.VERSION.SDK_INT < Build.VERSION_CODES.M) ? 0 : Layout.HYPHENATION_FREQUENCY_NONE;
+  private static final int DEFAULT_BREAK_STRATEGY = Layout.BREAK_STRATEGY_HIGH_QUALITY;
+  private static final int DEFAULT_HYPHENATION_FREQUENCY = Layout.HYPHENATION_FREQUENCY_NONE;
 
   protected float mLineHeight = Float.NaN;
   protected boolean mIsColorSet = false;