Remove PRODUCT_CONTRIBUTORS_FILE which is no longer in use.

Bug: 5433204
Change-Id: Id88c21f8d1991d8cbcc5bb7dae784aa72dc4becf
diff --git a/core/product.mk b/core/product.mk
index 72cb2f7..8b76243 100644
--- a/core/product.mk
+++ b/core/product.mk
@@ -76,7 +76,6 @@
     PRODUCT_EXTRA_RECOVERY_KEYS \
     PRODUCT_PACKAGE_OVERLAYS \
     DEVICE_PACKAGE_OVERLAYS \
-    PRODUCT_CONTRIBUTORS_FILE \
     PRODUCT_TAGS \
     PRODUCT_SDK_ADDON_NAME \
     PRODUCT_SDK_ADDON_COPY_FILES \
diff --git a/core/product_config.mk b/core/product_config.mk
index e673d5c..23e06ea 100644
--- a/core/product_config.mk
+++ b/core/product_config.mk
@@ -282,10 +282,6 @@
 PRODUCT_COPY_FILES := \
     $(strip $(PRODUCTS.$(INTERNAL_PRODUCT).PRODUCT_COPY_FILES))
 
-# The HTML file containing the contributors to the project.
-PRODUCT_CONTRIBUTORS_FILE := \
-    $(strip $(PRODUCTS.$(INTERNAL_PRODUCT).PRODUCT_CONTRIBUTORS_FILE))
-
 # A list of property assignments, like "key = value", with zero or more
 # whitespace characters on either side of the '='.
 PRODUCT_PROPERTY_OVERRIDES := \