Get rid of enable_jvm_ir flag
diff --git a/build.gradle b/build.gradle
index 17eb9b1..c524188 100644
--- a/build.gradle
+++ b/build.gradle
@@ -1,5 +1,5 @@
 /*
- * Copyright 2017-2020 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2017-2021 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license.
  */
 
 buildscript {
@@ -40,9 +40,6 @@
             maven { url "https://oss.sonatype.org/content/repositories/snapshots" }
         }
     }
-    // These two flags are enabled in train builds for JVM IR compiler testing
-    ext.jvm_ir_enabled = rootProject.properties['enable_jvm_ir'] != null
-    ext.jvm_ir_api_check_enabled = rootProject.properties['enable_jvm_ir_api_check'] != null
 
     repositories {
         mavenLocal()
@@ -159,14 +156,3 @@
 
 apply from: rootProject.file('gradle/compiler-version.gradle')
 apply from: rootProject.file("gradle/dokka.gradle")
-
-// Disable binary compatibility check for JVM IR compiler output by default
-if (jvm_ir_enabled) {
-    subprojects { project ->
-        afterEvaluate {
-            configure(tasks.matching { it.name == "apiCheck" }) {
-                enabled = enabled && jvm_ir_api_check_enabled
-            }
-        }
-    }
-}