Revert "Add a key to enable spilling of all variables in a suspending context"

This reverts commit 38d97d0621.

compiler/ir/backend.jvm/codegen/src/org/jetbrains/kotlin/backend/jvm/codegen/CoroutineCodegen.kt

@@ -13,7 +13,6 @@ import org.jetbrains.kotlin.backend.jvm.unboxInlineClass
 import org.jetbrains.kotlin.codegen.ClassBuilder
 import org.jetbrains.kotlin.codegen.coroutines.CoroutineTransformerMethodVisitor
 import org.jetbrains.kotlin.codegen.coroutines.reportSuspensionPointInsideMonitor
-import org.jetbrains.kotlin.config.JVMConfigurationKeys
 import org.jetbrains.kotlin.config.LanguageFeature
 import org.jetbrains.kotlin.ir.declarations.*
 import org.jetbrains.kotlin.ir.expressions.IrBlockBody
@@ -37,14 +36,13 @@ internal fun MethodNode.acceptWithStateMachine(
     varsCountByType: Map<Type, Int>,
     obtainContinuationClassBuilder: () -> ClassBuilder,
 ) {
-    val context = classCodegen.context
-    val state = context.state
+    val state = classCodegen.context.state
     val languageVersionSettings = state.languageVersionSettings
     assert(languageVersionSettings.supportsFeature(LanguageFeature.ReleaseCoroutines)) { "Experimental coroutines are unsupported in JVM_IR backend" }
     val element = if (irFunction.isSuspend)
         irFunction.psiElement ?: classCodegen.irClass.psiElement
     else
-        context.suspendLambdaToOriginalFunctionMap[classCodegen.irClass.attributeOwnerId]!!.psiElement
+        classCodegen.context.suspendLambdaToOriginalFunctionMap[classCodegen.irClass.attributeOwnerId]!!.psiElement
 
     val lineNumber = if (irFunction.isSuspend) {
         val irFile = irFunction.file
@@ -76,7 +74,6 @@ internal fun MethodNode.acceptWithStateMachine(
         internalNameForDispatchReceiver = classCodegen.type.internalName,
         putContinuationParameterToLvt = false,
         initialVarsCountByType = varsCountByType,
-        shouldOptimiseUnusedVariables = !context.configuration.getBoolean(JVMConfigurationKeys.ENABLE_DEBUG_MODE)
     )
     accept(visitor)
 }