package/thttpd: remove package

Despite the last thttpd release 2.29 back in 2018, the package doesn't
build with modern compiler (gcc-15) and Autoconf (newer than 2.13) [1].

Remove TestThttpd from our testsuite.

[1] https://lore.kernel.org/buildroot/20250811203206.1506378-1-romain.naour@smile.fr/

Cc: Julien Olivain <ju.o@free.fr>
Signed-off-by: Romain Naour <romain.naour@smile.fr>
Signed-off-by: Arnout Vandecappelle <arnout@rnout.be>

support/testing/tests/package/test_thttpd.py

@@ -1,26 +0,0 @@
-import os
-
-import infra.basetest
-
-
-class TestThttpd(infra.basetest.BRTest):
-    config = infra.basetest.BASIC_TOOLCHAIN_CONFIG + \
-        """
-        BR2_PACKAGE_THTTPD=y
-        BR2_TARGET_ROOTFS_CPIO=y
-        # BR2_TARGET_ROOTFS_TAR is not set
-        """
-
-    def test_run(self):
-        cpio_file = os.path.join(self.builddir, "images", "rootfs.cpio")
-        self.emulator.boot(arch="armv5",
-                           kernel="builtin",
-                           options=["-initrd", cpio_file])
-        self.emulator.login()
-
-        msg = "Hello Buildroot!"
-
-        self.assertRunOk("thttpd -V")
-        self.assertRunOk(f"echo '{msg}' > /var/www/data/index.html")
-        self.assertRunOk("wget http://localhost/index.html")
-        self.assertRunOk(f"grep -F '{msg}' index.html")