Removed unused linker files

linker/esp32.extram.bss.ld

@@ -1,18 +0,0 @@
-/* This section is only included if CONFIG_SPIRAM_ALLOW_BSS_SEG_EXTERNAL_MEMORY
-   is set, to link some sections to BSS in PSRAM */
-
-SECTIONS
-{
-   /* external memory bss, from any global variable with EXT_RAM_ATTR attribute*/
-  .ext_ram.bss (NOLOAD) :
-  {
-    _ext_ram_bss_start = ABSOLUTE(.);
-    *(.ext_ram.bss*)
-    *libnet80211.a:(.dynsbss .sbss .sbss.* .gnu.linkonce.sb.* .scommon .sbss2.* .gnu.linkonce.sb2.* .dynbss .bss .bss.* .share.mem .gnu.linkonce.b.* COMMON)
-    *libpp.a:(.dynsbss .sbss .sbss.* .gnu.linkonce.sb.* .scommon .sbss2.* .gnu.linkonce.sb2.* .dynbss .bss .bss.* .share.mem .gnu.linkonce.b.* COMMON)
-    *liblwip.a:(.dynsbss .sbss .sbss.* .gnu.linkonce.sb.* .scommon .sbss2.* .gnu.linkonce.sb2.* .dynbss .bss .bss.* .share.mem .gnu.linkonce.b.* COMMON)
-    *libbt.a:(EXCLUDE_FILE (libbtdm_app.a) .dynsbss .sbss .sbss.* .gnu.linkonce.sb.* .scommon .sbss2.* .gnu.linkonce.sb2.* .dynbss .bss .bss.* .share.mem .gnu.linkonce.b.* COMMON)
-    . = ALIGN(4);
-    _ext_ram_bss_end = ABSOLUTE(.);
-  } > extern_ram_seg
-}

linker/nrf52840_s140_sim832.ld

@@ -1,46 +0,0 @@
-/* Linker script to configure memory regions. 
-
-geeksville: modified this to simulate a nrf52832 but with a sd140 soft device.  So I can 
-see how the memory footprint works on this lower end CPU.  Note: to work with sd140 in my bootloader 
-I need to start ram at 0x6000 (instead of the correct 0x3600 for sd132) - so I have less
-RAM available than on a real 832.
-*/
-
-SEARCH_DIR(.)
-GROUP(-lgcc -lc -lnosys)
-
-MEMORY
-{
-  FLASH (rx)     : ORIGIN = 0x26000, LENGTH = 0x6D000 - 0x26000
-  /* FLASH (rx)     : ORIGIN = 0x26000, LENGTH = 0xED000 - 0x26000 */
-
-  /* SRAM required by S132 depend on
-   * - Attribute Table Size
-   * - Vendor UUID count
-   * - Max ATT MTU
-   * - Concurrent connection peripheral + central + secure links
-   * - Event Len, HVN queue, Write CMD queue
-   */ 
-  /* RAM (rwx) :  ORIGIN = 0x20003600, LENGTH = 0x20010000 - 0x20003600 */
-  RAM (rwx) :  ORIGIN = 0x20006000, LENGTH = 0x20010000 - 0x20006000
-}
- 
-SECTIONS
-{
-  . = ALIGN(4);
-  .svc_data :
-  {
-    PROVIDE(__start_svc_data = .);
-    KEEP(*(.svc_data))
-    PROVIDE(__stop_svc_data = .);
-  } > RAM
-  
-  .fs_data :
-  {
-    PROVIDE(__start_fs_data = .);
-    KEEP(*(.fs_data))
-    PROVIDE(__stop_fs_data = .);
-  } > RAM
-} INSERT AFTER .data;
-
-INCLUDE "nrf52_common.ld"

platformio.ini

@@ -145,8 +145,6 @@ lib_deps =
   arduino-libraries/NTPClient#531eff39d9fbc831f3d03f706a161739203fbe2a
   lorol/LittleFS_esp32@^1.0.6
 
-# Hmm - this doesn't work yet
-# board_build.ldscript = linker/esp32.extram.bss.ld
 lib_ignore = 
   segger_rtt
   ESP32 BLE Arduino
@@ -264,7 +262,4 @@ debug_tool = jlink
 upload_protocol = jlink
 monitor_port = /dev/ttyUSB0
 ; this board's serial chip can only run at 115200, not faster
-monitor_speed = 115200 
-
-# For experimenting with RAM sizes
-# board_build.ldscript = linker/nrf52840_s140_sim832.ld
+monitor_speed = 115200