removed obsolete code, CBDOS is going to be based on hypervisor calls

src/dos_m65/,aliases_dos.s

@@ -20,23 +20,3 @@
 	!addr UNIT_SDCARD      = $05
 	!addr UNIT_FLOPPY      = $06
 	!addr UNIT_RAMDISK     = $07
-
-	; SD/SDHC card variables
-
-	!addr CARD_INIT_DONE   = $08 ; $80 - init done, $00 - init not done
-    !addr CARD_IS_SDHC     = $09 ; $00 = SD, $80 = SDHC
-    !addr CARD_SIZE        = $0A ; 4 bytes
-    !addr CARD_SECNUM      = $0E ; 4 bytes - sector number
-
-    !addr CARD_TMP_STEP    = $12 ; 4 bytes
-    !addr CARD_TMP_RETRIES = $16 ; 1 byte
-
-    !addr CARD_BUFPNT1     = $17 ; 4 bytes - pointer to hardware sector buffer  XXX replace copy routines with DMAgic
-    !addr CARD_BUFPNT2     = $1B ; 4 bytes - as above, but points to the 2nd page of the hardware buffer
-
-
-	;
-	; High memory
-	;
-
-	!addr CARD_BUF     = $8100 ; 512 bytes, up to $82FF - buffer for reading/writing data

src/dos_m65/cmdrdos/,check_nonlgpl3.s

@@ -1,4 +0,0 @@
-
-!ifndef HAS_NOLGPL3_WARN {
-	!error "No LGPL3 incompatible warning issued"
-}

src/dos_m65/dos_init.s

@@ -26,9 +26,4 @@ dos_INIT:
 	lda #CONFIG_UNIT_RAMDISK
 	sta UNIT_RAMDISK
 
-	; Mark SD card as not initialized
-
-	lda #$00
-	sta CARD_INIT_DONE
-
 	rts