Remove @file:JvmName on PlatformLogger actual declarations, fix potential compiling issue

mirai-core-api/src/androidMain/kotlin/event/EventChannel.android.kt

@@ -15,9 +15,6 @@
     "ACTUAL_FUNCTION_WITH_DEFAULT_ARGUMENTS"
 )
 
-@file:JvmMultifileClass
-@file:JvmName("EventChannelKt")
-
 
 package net.mamoe.mirai.event
 

mirai-core-api/src/jvmMain/kotlin/event/EventChannel.jvm.kt

@@ -15,9 +15,6 @@
     "ACTUAL_FUNCTION_WITH_DEFAULT_ARGUMENTS"
 )
 
-@file:JvmMultifileClass
-@file:JvmName("EventChannelKt")
-
 
 package net.mamoe.mirai.event