Remove BIDI mirroring hack from Key

This change also removes isRtlKeyboard attribute from <Keyboard/>

Bug: 5948247
Change-Id: I85998f17ae146a4c8cd0f419ab820b746cb8974f
diff --git a/java/res/xml-sw768dp/rows_symbols.xml b/java/res/xml-sw768dp/rows_symbols.xml
index 7458b36..2ba9357 100644
--- a/java/res/xml-sw768dp/rows_symbols.xml
+++ b/java/res/xml-sw768dp/rows_symbols.xml
@@ -102,12 +102,8 @@
         <Key
             latin:keyLabel="+"
             latin:moreKeys="@string/more_keys_for_plus" />
-        <Key
-            latin:keyLabel="("
-            latin:moreKeys="[,{,&lt;" />
-        <Key
-            latin:keyLabel=")"
-            latin:moreKeys="],},&gt;" />
+        <include
+            latin:keyboardLayout="@xml/keys_parentheses" />
         <Key
             latin:keyStyle="returnKeyStyle"
             latin:keyXPos="-15.704%p"
@@ -119,12 +115,8 @@
         <Key
             latin:keyStyle="toMoreSymbolKeyStyle"
             latin:keyWidth="13.829%p" />
-        <Key
-            latin:keyLabel="&lt;"
-            latin:moreKeys="≤,«,‹" />
-        <Key
-            latin:keyLabel="&gt;"
-            latin:moreKeys="≥,»,›" />
+        <include
+            latin:keyboardLayout="@xml/keys_less_greater" />
         <Key
             latin:keyLabel="="
             latin:moreKeys="≠,≈" />
@@ -133,8 +125,7 @@
                 latin:mode="url"
             >
                 <Key
-                    latin:keyLabel="\'"
-                    latin:moreKeys="‘,’,‚,‛" />
+                    latin:keyLabel="\'" />
             </case>
             <default>
                 <Key
@@ -181,11 +172,10 @@
             latin:keyStyle="spaceKeyStyle"
             latin:keyXPos="31.250%p"
             latin:keyWidth="37.500%p" />
-        <!-- Note: DroidSans doesn't have double-high-reversed-quotation '\u201f' glyph. -->
-        <!-- latin:moreKeys="“,”,„,‟,«,»,‘,’,‚,‛" -->
         <Key
             latin:keyLabel="&quot;"
-            latin:moreKeys="“,”,«,»,‘,’,‚,‛" />
+            latin:moreKeys="@string/more_keys_for_tablet_double_quote"
+            latin:maxMoreKeysColumn="4" />
         <Key
             latin:keyLabel="_" />
         <switch>