android: Drop the Android.mk build system

Android.mk files haven't really been supported by Mesa devs for a long
time.  Most of us have been willing to update Makefile.sources if we
remember and sometimes we try to blind code some Android.mk for a new
generator.  However, the reality is that it breaks regularly and ends up
being maintained by the Android community.  To address this problem
another approach was implemented in !10183 utilizing the maintained
meson build system.  The old Android.mk files are no longer required.

This commit was created with the following commands:

    git rm **/Android.mk
    git rm **/Android.*.mk
    git rm **/Makefile.sources
    git rm CleanSpec.mk

Closes: https://gitlab.freedesktop.org/mesa/mesa/-/issues/4487
Acked-by: Roman Stratiienko <r.stratiienko@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/9728>

src/loader/Android.mk

@@ -1,45 +0,0 @@
-# Mesa 3-D graphics library
-#
-# Copyright (C) 2014 Emil Velikov <emil.l.velikov@gmail.com>
-#
-# Permission is hereby granted, free of charge, to any person obtaining a
-# copy of this software and associated documentation files (the "Software"),
-# to deal in the Software without restriction, including without limitation
-# the rights to use, copy, modify, merge, publish, distribute, sublicense,
-# and/or sell copies of the Software, and to permit persons to whom the
-# Software is furnished to do so, subject to the following conditions:
-#
-# The above copyright notice and this permission notice shall be included
-# in all copies or substantial portions of the Software.
-#
-# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
-# THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
-# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
-# DEALINGS IN THE SOFTWARE.
-
-LOCAL_PATH := $(call my-dir)
-
-include $(LOCAL_PATH)/Makefile.sources
-
-# ---------------------------------------
-# Build libmesa_loader
-# ---------------------------------------
-
-include $(CLEAR_VARS)
-
-LOCAL_SRC_FILES := \
-	$(LOADER_C_FILES)
-
-LOCAL_EXPORT_C_INCLUDE_DIRS := $(LOCAL_PATH)
-
-ifneq ($(HAVE_GALLIUM_IRIS),)
-LOCAL_CFLAGS += -DPREFER_IRIS
-endif
-
-LOCAL_MODULE := libmesa_loader
-
-include $(MESA_COMMON_MK)
-include $(BUILD_STATIC_LIBRARY)

src/loader/Makefile.sources

@@ -1,7 +0,0 @@
-LOADER_C_FILES := \
-	loader_dri_helper.c \
-	loader_dri_helper.h \
-	loader.c \
-	loader.h \
-	pci_id_driver_map.c \
-	pci_id_driver_map.h