Auto detect possible use of legacy props

* Revert: Make legacy props an option disabled by default
  (reverted from commit 75aa615767457f2b62dda65b16ded41b0e6df11f)

* Instead check for ANDROID_PROPERTY_WORKSPACE in the updater-
  binary to determine whether legacy property service can be
  used

Change-Id: If68d5cca9a2b56edcb1c73db0474668cf46d8c91
diff --git a/gui/theme/common/landscape.xml b/gui/theme/common/landscape.xml
index 5e64010..c3d89fe 100644
--- a/gui/theme/common/landscape.xml
+++ b/gui/theme/common/landscape.xml
@@ -447,12 +447,6 @@
 				<data variable="tw_install_reboot"/>
 			</checkbox>
 
-			<checkbox>
-				<placement x="%col1_x_right%" y="%row13a_y%"/>
-				<text>{@enable_legacy_props_chk=Enable legacy properties for old zips}</text>
-				<data variable="tw_enable_legacy_props"/>
-			</checkbox>
-
 			<button style="main_button_half_width">
 				<placement x="%col1_x_left%" y="%row15a_y%"/>
 				<text>{@zip_add_btn=Add more Zips}</text>
diff --git a/gui/theme/common/languages/en.xml b/gui/theme/common/languages/en.xml
index 559475c..8a1be18 100644
--- a/gui/theme/common/languages/en.xml
+++ b/gui/theme/common/languages/en.xml
@@ -82,7 +82,6 @@
 		<string name="folder">Folder:</string>
 		<string name="file">File:</string>
 		<string name="zip_sig_chk">Zip signature verification</string>
-		<string name="enable_legacy_props_chk">Enable legacy properties for old zips</string>
 		<string name="inject_twrp_chk">Inject TWRP after install</string>
 		<string name="install_reboot_chk">Reboot after installation is complete</string>
 		<string name="options_hdr">Options</string>
diff --git a/gui/theme/common/portrait.xml b/gui/theme/common/portrait.xml
index c101014..f163bea 100644
--- a/gui/theme/common/portrait.xml
+++ b/gui/theme/common/portrait.xml
@@ -393,14 +393,8 @@
 			</checkbox>
 
 			<checkbox>
-				<placement x="%indent%" y="%row15_y%"/>
-				<text>{@enable_legacy_props_chk=Enable legacy properties for old zips}</text>
-				<data variable="tw_enable_legacy_props"/>
-			</checkbox>
-
-			<checkbox>
 				<condition var1="tw_has_injecttwrp" var2="1"/>
-				<placement x="%indent%" y="%row16a_y%"/>
+				<placement x="%indent%" y="%row15_y%"/>
 				<text>{@inject_twrp_chk=Inject TWRP after install}</text>
 				<data variable="tw_inject_after_zip"/>
 			</checkbox>
diff --git a/gui/theme/common/watch.xml b/gui/theme/common/watch.xml
index 2a82345..d5ef869 100644
--- a/gui/theme/common/watch.xml
+++ b/gui/theme/common/watch.xml
@@ -555,12 +555,6 @@
 				<data variable="tw_install_reboot"/>
 			</checkbox>
 
-			<checkbox>
-				<placement x="%indent%" y="%row5a_y%"/>
-				<text>{@enable_legacy_props_chk=Enable legacy properties for old zips}</text>
-				<data variable="tw_enable_legacy_props"/>
-			</checkbox>
-
 			<button>
 				<placement x="%col1_x_left%" y="%row11_y%"/>
 				<highlight color="%highlight_color%"/>