remove the feign-slf4j sub project from the previous cherry pick

build.gradle

@@ -125,18 +125,3 @@ project(':feign-ribbon') {
         testCompile 'com.google.mockwebserver:mockwebserver:20130706'
     }
 }
-
-project(':feign-slf4j') {
-    apply plugin: 'java'
-
-    test {
-        useTestNG()
-    }
-
-    dependencies {
-        compile     project(':feign-core')
-        compile     'org.slf4j:slf4j-api:1.7.5'
-        testCompile 'org.testng:testng:6.8.5'
-        testCompile 'org.slf4j:slf4j-simple:1.7.5'
-    }
-}