Remove 'application' and 'war' gradle plugins from default app template

[gsartori]

I would propose to remove the following Gradle plugins from the default Grails application template:

• application -> It was introduced to accomodate Micronaut and it generates the run gradle task. On Grails 7 it is redundant with bootRun.
• war -> Deploying an application on a web container is not the modern way of deplying apps anymore. I would not include it in the default template, one can always add it if needed.

From this

plugins {
        id "groovy"
        id "org.grails.grails-web"
        id "org.grails.grails-gsp"
        id "com.github.erdi.webdriver-binaries"
        id "war"
        id "idea"
        id "com.bertramlabs.asset-pipeline" version "5.0.1"
        id "application"
        id "eclipse"
}

To this

plugins {
    id "groovy"
    id "org.grails.grails-web"
    id "org.grails.grails-gsp"
    id "com.github.erdi.webdriver-binaries"
    id "com.bertramlabs.asset-pipeline" version "5.0.1"
    id "eclipse"
    id "idea"
}

[gsartori]

Starting with the cleanup of the "application" plugin grails/grails-forge#423