Faster spotlessApply (#1829)

Author: trask

buildSrc/src/main/kotlin/ai.spotless-conventions.gradle.kts

@@ -12,9 +12,6 @@ spotless {
     // ktfmt() // only supports 4 space indentation
     ktlint().userData(mapOf("indent_size" to "2", "continuation_indent_size" to "2"))
     licenseHeaderFile(rootProject.file("gradle/enforcement/spotless.license.java"), "(package|import|public)")
-    targetExclude(
-      "src/main/kotlin/io.opentelemetry.instrumentation.javaagent-codegen.gradle.kts",
-      "build/**")
   }
   format("misc") {
     // not using "**/..." to help keep spotless fast