Build: Remove jvmTarget 1.6 for several modules depending on 1.8 modules

Module targeting jvm 1.6 can't depend on jvm 8 one. In Gradle 6.5 this
behaviour is enforced by configuration error.

compiler/daemon/daemon-common-new/build.gradle.kts

@@ -4,8 +4,6 @@ plugins {
     id("jps-compatible")
 }
 
-jvmTarget = "1.6"
-
 val ktorExcludesForDaemon: List<Pair<String, String>> by rootProject.extra
 
 dependencies {

libraries/scripting/js-test/build.gradle.kts

@@ -3,8 +3,6 @@ plugins {
     kotlin("jvm")
 }
 
-jvmTarget = "1.6"
-
 val embeddableTestRuntime by configurations.creating
 
 dependencies {

libraries/scripting/js/build.gradle.kts

@@ -4,8 +4,6 @@ plugins {
     id("jps-compatible")
 }
 
-jvmTarget = "1.6"
-
 dependencies {
     compile(project(":kotlin-scripting-common"))
     compileOnly(project(":compiler:backend.js"))

libraries/scripting/jsr223-test/build.gradle.kts

@@ -3,8 +3,6 @@ plugins {
     kotlin("jvm")
 }
 
-jvmTarget = "1.6"
-
 val embeddableTestRuntime by configurations.creating {
     attributes {
         attribute(Usage.USAGE_ATTRIBUTE, objects.named(Usage.JAVA_RUNTIME))

libraries/scripting/jsr223/build.gradle.kts

@@ -3,8 +3,6 @@ plugins {
     kotlin("jvm")
 }
 
-jvmTarget = "1.6"
-
 publish()
 
 dependencies {

libraries/scripting/jvm-host-test/build.gradle.kts

@@ -3,8 +3,6 @@ plugins {
     kotlin("jvm")
 }
 
-jvmTarget = "1.6"
-
 val allTestsRuntime by configurations.creating
 val testCompile by configurations
 testCompile.extendsFrom(allTestsRuntime)

libraries/scripting/jvm-host/build.gradle.kts

@@ -4,8 +4,6 @@ plugins {
     id("jps-compatible")
 }
 
-jvmTarget = "1.6"
-
 publish()
 
 dependencies {