Revert "Make min_sdk overridable in override_apex"

This reverts commit 133c55b48abe73a51efc6f7cd30b6b6e318ba6f9.

Reason for revert: change was untested and not working

Change-Id: I06d6e3c439ba541ae85dc148f91b184b9731b92d
diff --git a/apex/apex.go b/apex/apex.go
index a9c8afc..ae5dd3b 100644
--- a/apex/apex.go
+++ b/apex/apex.go
@@ -124,6 +124,10 @@
 	// List of filesystem images that are embedded inside this APEX bundle.
 	Filesystems []string
 
+	// The minimum SDK version that this APEX must support at minimum. This is usually set to
+	// the SDK version that the APEX was first introduced.
+	Min_sdk_version *string
+
 	// Whether this APEX is considered updatable or not. When set to true, this will enforce
 	// additional rules for making sure that the APEX is truly updatable. To be updatable,
 	// min_sdk_version should be set as well. This will also disable the size optimizations like
@@ -389,10 +393,6 @@
 
 	// Trim against a specific Dynamic Common Lib APEX
 	Trim_against *string
-
-	// The minimum SDK version that this APEX must support at minimum. This is usually set to
-	// the SDK version that the APEX was first introduced.
-	Min_sdk_version *string
 }
 
 type apexBundle struct {
@@ -2880,7 +2880,7 @@
 	// Only override the minSdkVersion value on Apexes which already specify
 	// a min_sdk_version (it's optional for non-updatable apexes), and that its
 	// min_sdk_version value is lower than the one to override with.
-	minApiLevel := minSdkVersionFromValue(ctx, proptools.String(a.overridableProperties.Min_sdk_version))
+	minApiLevel := minSdkVersionFromValue(ctx, proptools.String(a.properties.Min_sdk_version))
 	if minApiLevel.IsNone() {
 		return ""
 	}
@@ -3534,8 +3534,8 @@
 	// TODO(b/219503907) this would need to be set to a.MinSdkVersionValue(ctx) but
 	// given it's coming via config, we probably don't want to put it in here.
 	var minSdkVersion bazel.StringAttribute
-	if a.overridableProperties.Min_sdk_version != nil {
-		minSdkVersion.SetValue(*a.overridableProperties.Min_sdk_version)
+	if a.properties.Min_sdk_version != nil {
+		minSdkVersion.SetValue(*a.properties.Min_sdk_version)
 	}
 	if props, ok := productVariableProps[minSdkVersionPropName]; ok {
 		for c, p := range props {