8350952: Remove some non present files from OPT_SPEED_SRC list

Reviewed-by: dholmes, clanger

make/hotspot/lib/JvmFeatures.gmk

@@ -224,11 +224,9 @@ ifeq ($(call check-jvm-feature, opt-size), true)
       frame_ppc.cpp \
       frame_s390.cpp \
       frame_x86.cpp \
-      genCollectedHeap.cpp \
       generation.cpp \
       growableArray.cpp \
       handles.cpp \
-      hashtable.cpp \
       heap.cpp \
       icache.cpp \
       icache_arm.cpp \
@@ -246,7 +244,6 @@ ifeq ($(call check-jvm-feature, opt-size), true)
       linkResolver.cpp \
       klass.cpp \
       klassVtable.cpp \
-      markSweep.cpp \
       memRegion.cpp \
       memoryPool.cpp \
       method.cpp \