Revert^2 "Add BUILD_BROKEN_DONT_CHECK_SYSTEMSDK"

fbf1b5e7f1caffdae4340f20802be5702e043c3b

Change-Id: I2b6c7866eac24b217197d5f659b37b2ae6b4207d
diff --git a/android/variable.go b/android/variable.go
index fa4cfc1..9844080 100644
--- a/android/variable.go
+++ b/android/variable.go
@@ -448,6 +448,7 @@
 	BuildBrokenVendorPropertyNamespace  bool     `json:",omitempty"`
 	BuildBrokenIncorrectPartitionImages bool     `json:",omitempty"`
 	BuildBrokenInputDirModules          []string `json:",omitempty"`
+	BuildBrokenDontCheckSystemSdk       bool     `json:",omitempty"`
 
 	BuildWarningBadOptionalUsesLibsAllowlist []string `json:",omitempty"`