[analysis] remove redundant diagnostic suppression

analysis/analysis-api-fir/src/org/jetbrains/kotlin/analysis/api/fir/KtFirAnalysisSessionProvider.kt

@@ -42,10 +42,7 @@ class KtFirAnalysisSessionProvider(project: Project) : CachingKtAnalysisSessionP
     override fun createAnalysisSession(
         firResolveSession: LLFirResolveSession,
         token: KtLifetimeToken,
-    ): KtAnalysisSession {
-        @Suppress("DEPRECATION")
-        return KtFirAnalysisSession.createAnalysisSessionByFirResolveSession(firResolveSession, token)
-    }
+    ): KtAnalysisSession = KtFirAnalysisSession.createAnalysisSessionByFirResolveSession(firResolveSession, token)
 }
 
 

analysis/analysis-api-fir/src/org/jetbrains/kotlin/analysis/api/fir/utils/ValidityAwareCachedValue.kt

@@ -20,7 +20,6 @@ class ValidityAwareCachedValue<T>(
 ) : ReadOnlyProperty<Any, T> {
     private val lazyValue = lazy(LazyThreadSafetyMode.PUBLICATION, init)
 
-    @Suppress("UNCHECKED_CAST")
     override fun getValue(thisRef: Any, property: KProperty<*>): T {
         token.assertIsValidAndAccessible()
         return lazyValue.value