Remove some lines that are duplicated in common.mak.

Originally committed as revision 5392 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavutil/Makefile

@@ -6,11 +6,6 @@ include ../config.mak
 # NOTE: -I.. is needed to include config.h
 CFLAGS=$(OPTFLAGS) -DHAVE_AV_CONFIG_H -DBUILD_AVUTIL -I.. -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_GNU_SOURCE
 
-#FIXME: This should be in configure/config.mak
-ifeq ($(CONFIG_WIN32),yes)
-    LDFLAGS=-Wl,--output-def,$(@:.dll=.def),--out-implib,lib$(SLIBNAME:$(SLIBSUF)=.dll.a)
-endif
-
 OBJS= mathematics.o \
       rational.o \
       intfloat_readwrite.o \
@@ -19,10 +14,6 @@ OBJS= mathematics.o \
 HEADERS = avutil.h common.h mathematics.h integer.h rational.h \
           intfloat_readwrite.h
 
-ifeq ($(TARGET_ARCH_SPARC64),yes)
-CFLAGS+= -mcpu=ultrasparc -mtune=ultrasparc
-endif
-
 NAME=avutil
 SUBDIR = libavutil
 ifeq ($(BUILD_SHARED),yes)