as31: Set until-build to 173.* instead of last AS 3.1 version (173.4301.25)

Was 173.4301.25 because of early builds of AS 3.2 which were 173 based

idea/src/META-INF/plugin.xml.as31

@@ -13,7 +13,7 @@ The Kotlin plugin provides language support in IntelliJ IDEA and Android Studio.
   <version>@snapshot@</version>
   <vendor url="http://www.jetbrains.com">JetBrains</vendor>
 
-  <idea-version since-build="173.1" until-build="173.4301.25"/>
+  <idea-version since-build="173.1" until-build="173.*"/>
 
   <depends>com.intellij.modules.platform</depends>
   <depends>com.intellij.modules.androidstudio</depends>
@@ -481,8 +481,6 @@ The Kotlin plugin provides language support in IntelliJ IDEA and Android Studio.
 
     <codeInsight.linkHandler prefix="#kotlinClass/" handlerClass="org.jetbrains.kotlin.idea.highlighter.markers.KotlinClassTooltipLinkHandler"/>
 
-    <defaultHighlightingSettingProvider language="kotlin" implementation="org.jetbrains.kotlin.idea.highlighter.KotlinDefaultHighlightingSettingsProvider"/>
-
     <typeDeclarationProvider implementation="org.jetbrains.kotlin.idea.codeInsight.KotlinTypeDeclarationProvider"/>
 
     <completion.contributor language="kotlin"
@@ -2836,11 +2834,11 @@ The Kotlin plugin provides language support in IntelliJ IDEA and Android Studio.
     />
 
     <localInspection implementationClass="org.jetbrains.kotlin.idea.inspections.CanSealedSubClassBeObjectInspection"
-                     displayName="Sealed sub-class without state and overridden equals"
+                     displayName="Refactor Sealed Sub-class to Object"
                      groupPath="Kotlin"
-                     groupName="Probable bugs"
+                     groupName="Style issues"
                      enabledByDefault="true"
-                     level="WEAK WARNING"
+                     level="INFO"
                      language="kotlin"
     />
 
@@ -2854,7 +2852,7 @@ The Kotlin plugin provides language support in IntelliJ IDEA and Android Studio.
     />
 
     <localInspection implementationClass="org.jetbrains.kotlin.idea.inspections.MainFunctionReturnUnitInspection"
-                     displayName="Entry point function should return Unit"
+                     displayName="Main function should return Unit"
                      groupPath="Kotlin"
                      groupName="Probable bugs"
                      enabledByDefault="true"