Revert deprecation of [Simple]CommandLinePropertySource

This commit reverts the deprecation of CommandLinePropertySource and
SimpleCommandLinePropertySource, since we have discovered that Spring
Boot actively uses SimpleCommandLinePropertySource in
org.springframework.boot.SpringApplication.

Closes gh-31207

spring-context/src/test/kotlin/org/springframework/context/support/BeanDefinitionDslTests.kt

@@ -76,7 +76,6 @@ class BeanDefinitionDslTests {
 	}
 
 	@Test
-	@Suppress("DEPRECATION")
 	fun `Declare beans using environment condition with the functional Kotlin DSL`() {
 		val beans = beans {
 			bean<Foo>()