libflac: remove no longer needed debug fix

packages/libflac/build.sh

@@ -5,13 +5,3 @@ TERMUX_PKG_REVISION=4
 TERMUX_PKG_SRCURL=http://downloads.xiph.org/releases/flac/flac-${TERMUX_PKG_VERSION}.tar.xz
 TERMUX_PKG_SHA256=91cfc3ed61dc40f47f050a109b08610667d73477af6ef36dcad31c31a4a8d53f
 TERMUX_PKG_DEPENDS="libogg"
-
-termux_step_pre_configure () {
-	if [ "$TERMUX_DEBUG" == "true" ]; then
-		# libflac does removes the flag "-g" from CFLAGS in the configure script
-		# Not sure why this is done but lets assume there is a good reason for it.
-		# -g3 is normally passed for a debug build in termux, -g is then removed
-		# and only "3" is left which isn't a valid option to the compiler.
-		export CFLAGS="${CFLAGS/-g3/}"
-	fi
-}