fix(provider): remove unused logger in LivingDocumentation and HarmonyOsLivingDocumentation

Remove unused `logger` variables in the `LivingDocumentation` and `HarmonyOsLivingDocumentation` classes, as they were not being used in the code. This improves code cleanliness and reduces potential confusion.

Author: phodal

src/main/kotlin/cc/unitmesh/devti/provider/HarmonyOsLivingDocumentation.kt

@@ -40,8 +40,6 @@ class HarmonyOsLivingDocumentation : LivingDocumentation {
         });
     }
 
-    val logger = logger<HarmonyOsLivingDocumentation>()
-
     override fun findNearestDocumentationTarget(psiElement: PsiElement): PsiNameIdentifierOwner? {
         if (psiElement is PsiNameIdentifierOwner) {
             return psiElement

src/main/kotlin/cc/unitmesh/devti/provider/LivingDocumentation.kt

@@ -52,7 +52,6 @@ interface LivingDocumentation {
         private val languageExtension: LanguageExtension<LivingDocumentation> =
             LanguageExtension("cc.unitmesh.livingDocumentation")
 
-        val logger = logger<LivingDocumentation>()
         fun forLanguage(language: Language): LivingDocumentation? {
             val documentation = languageExtension.forLanguage(language)
             if (documentation != null) {