build: Remove unused files

We do not use slim symbols, and all the symbols are hidden by default;
this means we don't need to test those things any more.

src/check-has-hidden-symbols.c

@@ -1,3 +0,0 @@
-#include "cairoint.h"
-
-CAIRO_HAS_HIDDEN_SYMBOLS

src/check-plt.sh

@@ -1,30 +0,0 @@
-#!/bin/sh
-
-LC_ALL=C
-export LC_ALL
-
-if which readelf 2>/dev/null >/dev/null; then
-	:
-else
-	echo "'readelf' not found; skipping test"
-	exit 0
-fi
-
-test -z "$srcdir" && srcdir=.
-test -z "$MAKE" && MAKE=make
-stat=0
-
-if [ "x$CAIRO_HAS_HIDDEN_SYMBOLS" = x ]; then
-	$MAKE check-has-hidden-symbols.i > /dev/null || exit 1
-	if tail -1 check-has-hidden-symbols.i | grep CAIRO_HAS_HIDDEN_SYMBOLS >/dev/null; then
-		echo "Compiler doesn't support symbol visibility; skipping test"
-		exit 0
-	fi
-fi
-
-for so in .libs/lib*.so "$@"; do
-	echo Checking "$so" for local PLT entries
-	readelf -W -r "$so" | grep 'JU\?MP_SLO' | grep 'cairo' >&2 && stat=1
-done
-
-exit $stat

src/make-cairo-def.sh

@@ -1,27 +0,0 @@
-#!/bin/sh
-
-LC_ALL=C
-export LC_ALL
-
-if [ $# -lt 3 ];
-then
-    echo "Generate cairo def file"
-    echo "Usage: $0 <def-filename> <cairo-features-file> <cairo-headers>..."
-    exit 1
-fi
-
-def_file="$1"
-cairo_features_h="$2"
-shift 2
-
-#echo Generating $def_file
-
-(echo EXPORTS; \
- (cat $* || echo 'cairo_ERROR ()' ) | \
-     egrep -v '^# *include' | \
-     ( cat "$cairo_features_h" - | egrep -v '^#pragma' | cpp -D__cplusplus - || echo 'cairo_ERROR ()' ) | \
-     egrep '^cairo_.* \(' | \
-     sed -e 's/[ 	].*//' | \
-     sort; \
- ) > "$def_file"
-grep -q -v cairo_ERROR "$def_file" || (rm "$def_file"; false)

src/meson-check-def.sh

@@ -1,38 +0,0 @@
-#!/bin/sh
-
-LC_ALL=C
-export LC_ALL
-
-if [ $# -lt 2 ];
-then
-    echo "Check that cairo library has same exported symbols as cairo.def"
-    echo "Usage: $0 <def-filename> <cairo-library>"
-    exit 1
-fi
-
-def="$1"
-so="$2"
-
-if which nm 2>/dev/null >/dev/null; then
-    :
-else
-    echo "'nm' not found; skipping test"
-    exit 0
-fi
-
-stat=0
-
-if [ "`uname -s`" = "Linux" ]; then
-	get_cairo_syms='( objdump -t "$so" | grep "^[^ ]* [^l.*]*[.]"; objdump -t "$so" | grep "[.]hidden.*\\<cairo"; ) | sed "s/.* //"'
-else
-	get_cairo_syms='nm "$so" | grep " [BCDGINRSTVW] " | cut -d" " -f3'
-fi
-
-echo Checking that $so has the same symbol list as $def
-
-{
-    echo EXPORTS
-    eval $get_cairo_syms | c++filt --no-params | grep -v '^_cairo_test_\|^_fini\|^_init\|^_save[fg]pr\|^_rest[fg]pr\|^_Z\|^__gnu\|^_bss_end\|^__bss\|^_edata\|^_end\|^__end\|^_fbss\|^_fdata\|^_ftext' | sort -u
-} | diff "$def" - >&2 || stat=1
-
-exit $stat