Remove BUILD_BROKEN_USES_SOONG_PYTHON2_MODULES

It's been available for over a year, lets progress the python3 migration
by removing it.

Bug: 203436762
Test: Presubmits
Change-Id: I4193767a6a72a527eeca56fbabe477bee9e21c7a
diff --git a/Changes.md b/Changes.md
index fc15e60..9f2449c 100644
--- a/Changes.md
+++ b/Changes.md
@@ -43,14 +43,9 @@
 The path set when running builds now makes the `python` executable point to python 3,
 whereas on previous versions it pointed to python 2. If you still have python 2 scripts,
 you can change the shebang line to use `python2` explicitly. This only applies for
-scripts run directly from makefiles, or from soong genrules. This behavior can be
-temporarily overridden by setting the `BUILD_BROKEN_PYTHON_IS_PYTHON2` environment
-variable to `true`. It's only an environment variable and not a product config variable
-because product config sometimes calls python code.
+scripts run directly from makefiles, or from soong genrules.
 
-In addition, `python_*` soong modules no longer allow python 2. This can be temporarily
-overridden by setting the `BUILD_BROKEN_USES_SOONG_PYTHON2_MODULES` product configuration
-variable to `true`.
+In addition, `python_*` soong modules no longer allow python 2.
 
 Python 2 is slated for complete removal in V.
 
diff --git a/core/config.mk b/core/config.mk
index a294223..ba3896c 100644
--- a/core/config.mk
+++ b/core/config.mk
@@ -173,6 +173,7 @@
 $(KATI_obsolete_var BUILDING_PVMFW_IMAGE,BUILDING_PVMFW_IMAGE is no longer used)
 $(KATI_obsolete_var BOARD_BUILD_SYSTEM_ROOT_IMAGE)
 $(KATI_obsolete_var FS_GET_STATS)
+$(KATI_obsolete_var BUILD_BROKEN_USES_SOONG_PYTHON2_MODULES)
 
 # Used to force goals to build.  Only use for conditionally defined goals.
 .PHONY: FORCE
@@ -363,8 +364,7 @@
 # configs, generally for cross-cutting features.
 
 # Build broken variables that should be treated as booleans
-_build_broken_bool_vars := \
-  BUILD_BROKEN_USES_SOONG_PYTHON2_MODULES \
+_build_broken_bool_vars :=
 
 # Build broken variables that should be treated as lists
 _build_broken_list_vars := \
diff --git a/core/soong_config.mk b/core/soong_config.mk
index a018c9b..fddb500 100644
--- a/core/soong_config.mk
+++ b/core/soong_config.mk
@@ -286,7 +286,6 @@
 $(call add_json_bool, GenruleSandboxing,                   $(if $(GENRULE_SANDBOXING),$(filter true,$(GENRULE_SANDBOXING)),$(if $(filter true,$(BUILD_BROKEN_GENRULE_SANDBOXING)),,true)))
 $(call add_json_bool, BuildBrokenEnforceSyspropOwner,      $(filter true,$(BUILD_BROKEN_ENFORCE_SYSPROP_OWNER)))
 $(call add_json_bool, BuildBrokenTrebleSyspropNeverallow,  $(filter true,$(BUILD_BROKEN_TREBLE_SYSPROP_NEVERALLOW)))
-$(call add_json_bool, BuildBrokenUsesSoongPython2Modules,  $(filter true,$(BUILD_BROKEN_USES_SOONG_PYTHON2_MODULES)))
 $(call add_json_bool, BuildBrokenVendorPropertyNamespace,  $(filter true,$(BUILD_BROKEN_VENDOR_PROPERTY_NAMESPACE)))
 $(call add_json_bool, BuildBrokenIncorrectPartitionImages, $(filter true,$(BUILD_BROKEN_INCORRECT_PARTITION_IMAGES)))
 $(call add_json_list, BuildBrokenInputDirModules,          $(BUILD_BROKEN_INPUT_DIR_MODULES))