Remove old conversion generator

Author: wojtek-t

Diff for: cmd/genconversion/conversion.go

@@ -103,7 +103,6 @@ kube::golang::test_targets() {
     cmd/genman
     cmd/mungedocs
     cmd/genbashcomp
-    cmd/genconversion
     cmd/genswaggertypedocs
     examples/k8petstore/web-server/src
     github.com/onsi/ginkgo/ginkgo

Diff for: hack/after-build/update-generated-conversions.sh

@@ -51,7 +51,6 @@ if ! $ALL ; then
 fi
 
 BASH_TARGETS="codecgen
-	generated-conversions
 	generated-docs
 	generated-swagger-docs
 	swagger-spec

Diff for: hack/after-build/verify-generated-conversions.sh

@@ -134,18 +134,6 @@ else
 fi
 echo "${reset}"
 
-echo -ne "Checking for conversions that need updating... "
-if ! hack/after-build/verify-generated-conversions.sh > /dev/null; then
-  echo "${red}ERROR!"
-  echo "Some conversions functions need regeneration."
-  echo "To regenerate conversions, run:"
-  echo "  hack/update-generated-conversions.sh"
-  exit_code=1
-else
-  echo "${green}OK"
-fi
-echo "${reset}"
-
 echo -ne "Checking for swagger type documentation that need updating... "
 if ! hack/after-build/verify-generated-swagger-docs.sh > /dev/null; then
   echo "${red}ERROR!"