boards: mro pixracerpro Add remaining SRAM4 & DTCM to heap

boards/mro/pixracerpro/nuttx-config/scripts/bootloader_script.ld

@@ -196,15 +196,6 @@ SECTIONS
 		_ebss = ABSOLUTE(.);
 	} > AXI_SRAM
 
-	/* Emit the the D3 power domain section for locating BDMA data */
-
-	.sram4_reserve (NOLOAD) :
-	{
-		*(.sram4)
-		. = ALIGN(4);
-		_sram4_heap_start = ABSOLUTE(.);
-	} > SRAM4
-
 	/* Stabs debugging sections. */
 	.stab 0 : { *(.stab) }
 	.stabstr 0 : { *(.stabstr) }
@@ -218,13 +209,4 @@ SECTIONS
 	.debug_line 0 : { *(.debug_line) }
 	.debug_pubnames 0 : { *(.debug_pubnames) }
 	.debug_aranges 0 : { *(.debug_aranges) }
-
-	.ramfunc : {
-		_sramfuncs = .;
-		*(.ramfunc  .ramfunc.*)
-		. = ALIGN(4);
-		_eramfuncs = .;
-	} > ITCM_RAM AT > FLASH
-
-	_framfuncs = LOADADDR(.ramfunc);
 }