[M2351] Remove draft uvisor code with GCC_ARM

uVisor is deprecated since mbed-os 5.10, so remove related code with it.

targets/TARGET_NUVOTON/TARGET_M2351/device/TOOLCHAIN_GCC_ARM/M2351.ld

@@ -150,39 +150,8 @@ SECTIONS
          . = ALIGN(8);
     } > VECTORS
 
-    /* ensure that uvisor bss is at the beginning of memory */
-    
-    .uvisor.bss (NOLOAD):
-    {
-        . = ALIGN(32);
-        __uvisor_bss_start = .;
-
-        /* protected uvisor main bss */
-        . = ALIGN(32);
-        __uvisor_bss_main_start = .;
-        KEEP(*(.keep.uvisor.bss.main))
-        . = ALIGN(32);
-        __uvisor_bss_main_end = .;
-
-        /* protected uvisor secure boxes bss */
-        . = ALIGN(32);
-        __uvisor_bss_boxes_start = .;
-        KEEP(*(.keep.uvisor.bss.boxes))
-        . = ALIGN(32);
-        __uvisor_bss_boxes_end = .;
-
-        /* Ensure log2(size) alignment of the uvisor region, to ensure that the region can be effectively protected by the MPU. */
-        . = ALIGN(1 << LOG2CEIL(__uvisor_bss_boxes_end - __uvisor_bss_start));
-        __uvisor_bss_end = .;
-    } > RAM_INTERN
-
     .text :
     {
-        /* uVisor code and data */
-        . = ALIGN(8);
-        __uvisor_main_start = .;
-        *(.uvisor.main)
-        __uvisor_main_end = .;
         *(.text*)
 
         KEEP(*(.init))
@@ -294,50 +263,6 @@ SECTIONS
 
     } >RAM_INTERN AT>FLASH
 
-    /* uvisor configuration data */   
-    .uvisor.secure :
-    {
-        . = ALIGN(32);
-        __uvisor_secure_start = .;
-
-        /* uvisor secure boxes configuration tables */
-        . = ALIGN(32);
-        __uvisor_cfgtbl_start = .;
-        KEEP(*(.keep.uvisor.cfgtbl))
-        . = ALIGN(32);
-        __uvisor_cfgtbl_end = .;
-
-        /* pointers to uvisor secure boxes configuration tables */
-        /* note: no further alignment here, we need to have the exact list of pointers */
-        __uvisor_cfgtbl_ptr_start = .;
-        KEEP(*(.keep.uvisor.cfgtbl_ptr_first))
-        KEEP(*(.keep.uvisor.cfgtbl_ptr))
-        __uvisor_cfgtbl_ptr_end = .;
-
-        /* the following symbols are kept for backward compatibility and will be soon
-         * deprecated; applications actively using uVisor (__uvisor_mode == UVISOR_ENABLED)
-         * will need to use uVisor 0.8.x or above, or the security assertions will halt the
-         * system */
-        /************************/
-        __uvisor_data_src = .;
-        __uvisor_data_start = .;
-        __uvisor_data_end = .;
-        /************************/
-
-        . = ALIGN(32);
-        __uvisor_secure_end = .;
-    } >FLASH
-
-    .uninitialized (NOLOAD):
-    {
-        . = ALIGN(32);
-        __uninitialized_start = .;
-        *(.uninitialized)
-        KEEP(*(.keep.uninitialized))
-        . = ALIGN(32);
-        __uninitialized_end = .;
-    } > RAM_INTERN
-
     .bss (NOLOAD):
     {
         __bss_start__ = .;
@@ -358,11 +283,4 @@ SECTIONS
     PROVIDE(__heap_size = SIZEOF(.heap));
     PROVIDE(__mbed_sbrk_start = ADDR(.heap));
     PROVIDE(__mbed_krbs_start = ADDR(.heap) + SIZEOF(.heap));
-    
-    /* Provide physical memory boundaries for uVisor. */    
-    __uvisor_flash_start = ORIGIN(VECTORS);
-    __uvisor_flash_end = ORIGIN(FLASH) + LENGTH(FLASH);
-    __uvisor_sram_start = ORIGIN(RAM_INTERN);
-    __uvisor_sram_end = ORIGIN(RAM_INTERN) + LENGTH(RAM_INTERN);
-    
 }

targets/TARGET_NUVOTON/TARGET_M2351/device/startup_M2351.c

@@ -61,7 +61,6 @@ extern uint32_t __data_end__;
 extern uint32_t __bss_start__;
 extern uint32_t __bss_end__;
 
-extern void uvisor_init(void);
 #if defined(TOOLCHAIN_GCC_ARM)
 extern void _start(void);
 #else