fix spotbugs

gradle/quality/spotbugs.gradle

@@ -1,19 +1,10 @@
 apply plugin: "com.github.spotbugs"
 
 spotbugs {
-    toolVersion = '4.7.1'
+    toolVersion = '4.7.3'
     ignoreFailures = true
 }
 
-spotbugsMain {
-    reports {
-        html {
-            enabled = true
-            destination = file("$buildDir/reports/spotbugs/main/spotbugs.html")
-        }
-    }
-}
-
 spotbugsTest {
     enabled = false
 }