Removed unused ch5 assembly example

examples/asm/ch5/Makefile

@@ -1,10 +0,0 @@
-ch5.debug: ch5
-	riscv64-unknown-elf-objdump -D ch5 > ch5.debug
-
-ch5: ch5.S Makefile
-	riscv64-unknown-elf-gcc -nodefaultlibs -nostartfiles -o ch5 ch5.S
-# -ffreestanding 
-# -nostdlib 
-
-clean: 
-	rm -f ch5 ch5.debug

examples/asm/ch5/ch5.S

@@ -1,16 +0,0 @@
-# ch5.s
-# David_Harris@hmc.edu 14 December 2021
-
-.section .text.init
-
-.globl _start
-_start:
-    lw x1, 4(x0)
-    sw x1, 8(x0)
-    add x2, x1, x1
-    beq x1, x2, done
-loop:
-    jal x0, loop
-done:
-
-.end

examples/asm/ch5/ch5.debug

@@ -1,38 +0,0 @@
-
-ch5:     file format elf64-littleriscv
-
-
-Disassembly of section .text:
-
-0000000000010078 <_start>:
-   10078:	00402083          	lw	ra,4(zero) # 4 <_start-0x10074>
-   1007c:	00102423          	sw	ra,8(zero) # 8 <_start-0x10070>
-   10080:	00108133          	add	sp,ra,ra
-   10084:	00208463          	beq	ra,sp,1008c <done>
-
-0000000000010088 <loop>:
-   10088:	0000006f          	j	10088 <loop>
-
-Disassembly of section .riscv.attributes:
-
-0000000000000000 <.riscv.attributes>:
-   0:	3241                	addiw	tp,tp,-16
-   2:	0000                	unimp
-   4:	7200                	ld	s0,32(a2)
-   6:	7369                	lui	t1,0xffffa
-   8:	01007663          	bgeu	zero,a6,14 <_start-0x10064>
-   c:	0028                	addi	a0,sp,8
-   e:	0000                	unimp
-  10:	7205                	lui	tp,0xfffe1
-  12:	3676                	fld	fa2,376(sp)
-  14:	6934                	ld	a3,80(a0)
-  16:	7032                	0x7032
-  18:	5f30                	lw	a2,120(a4)
-  1a:	326d                	addiw	tp,tp,-5
-  1c:	3070                	fld	fa2,224(s0)
-  1e:	615f 7032 5f30      	0x5f307032615f
-  24:	3266                	fld	ft4,120(sp)
-  26:	3070                	fld	fa2,224(s0)
-  28:	645f 7032 5f30      	0x5f307032645f
-  2e:	30703263          	0x30703263
-	...