build(deps): remove dependency kotlinx-collections-immutable

50a7dec removed the dependency from some of the `build.gradle.kts` files.
I forgot to remove it from the `libs.versions.toml` and missed an instance in `model-api-gen.`

Author: Oleksandr Dzhychko

gradle/libs.versions.toml

@@ -50,7 +50,6 @@ kotlin-reflect = { group = "org.jetbrains.kotlin", name = "kotlin-reflect", vers
 kotlin-serialization-json = { group = "org.jetbrains.kotlinx", name = "kotlinx-serialization-json", version.ref = "kotlinSerialization" }
 kotlin-serialization-yaml = { group = "com.charleskorn.kaml", name = "kaml", version = "0.61.0" }
 kotlin-logging = { group = "io.github.microutils", name = "kotlin-logging", version = "3.0.5" }
-kotlin-collections-immutable = { group = "org.jetbrains.kotlinx", name = "kotlinx-collections-immutable", version = "0.3.7" }
 kotlin-datetime = { group = "org.jetbrains.kotlinx", name = "kotlinx-datetime", version = "0.6.1" }
 kotlin-gradlePlugin = { group = "org.jetbrains.kotlin", name = "kotlin-gradle-plugin", version.ref = "kotlin" }
 

model-api-gen/build.gradle.kts

@@ -7,7 +7,6 @@ val kotlinxSerializationVersion: String by rootProject
 val kotlinCollectionsImmutableVersion: String by rootProject
 
 dependencies {
-    implementation(libs.kotlin.collections.immutable)
     implementation(kotlin("stdlib-jdk8"))
     implementation(libs.kotlin.serialization.json)
     implementation(libs.kotlin.serialization.yaml)