Revert "Compile portmidi with ALSA support on Linux."

This reverts commit 2d1932fd6c.

dep/Makefile

@@ -4,10 +4,6 @@ LOCAL = $(PWD)
 # Arch-specifics
 include ../arch.mk
 
-ifeq ($(ARCH),lin)
-	CFLAGS += -DPMALSA
-endif
-
 ifeq ($(ARCH),mac)
 	export CFLAGS = -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.7.sdk \
 		-mmacosx-version-min=10.7