examples: Deprecate mbed-os-example-bootloader

We no longer support the mbed-os-example-bootloader example.

TESTS/integration/COMMON/sample.txt

@@ -937,7 +937,8 @@ View the full C++ API:
 
 ## Flash IAP example
 
-For an example that uses the `FlashIAP` driver, please see the [bootloader example](https://github.com/ARMmbed/mbed-os-example-bootloader).
+For an example that uses the `FlashIAP` driver, please see the [Mbed Stress Test](https://github.com/ARMmbed/mbed-stress-test).
+
 # I2C
 
 <span class="images">![](https://os.mbed.com/docs/v5.13/mbed-os-api-doxy/classmbed_1_1_i2_c.png)<span>I2C class hierarchy</span></span>

tools/test/examples/README.md

@@ -156,7 +156,6 @@ Passed example compilation:
 | mbed-os-example-crash-reporting |  K64F  |  GCC_ARM  | TEST_ON  |    PASSED    |
 | mbed-os-example-filesystem      |  K64F  |  GCC_ARM  | TEST_ON  |    PASSED    |
 | mbed-os-example-blinky          |  K64F  |  GCC_ARM  | TEST_ON  |    PASSED    |
-| mbed-os-example-bootloader      |  K64F  |  GCC_ARM  | TEST_OFF |    PASSED    |
 | mbed-os-example-cpu-stats       |  K64F  |  GCC_ARM  | TEST_ON  |    PASSED    |
 | mbed-os-example-sys-info        |  K64F  |  GCC_ARM  | TEST_ON  |    PASSED    |
 | mbed-os-example-attestation     |  K64F  |  GCC_ARM  | TEST_ON  |    PASSED    |

tools/test/examples/examples.json

@@ -252,20 +252,6 @@
         "test" : false,
         "auto-update" : true
     },
-    {
-        "name": "mbed-os-example-bootloader",
-        "github":"https://github.com/ARMmbed/mbed-os-example-bootloader",
-        "sub-repo-example": false,
-        "subs": [],
-        "features" : [],
-        "targets" : ["K64F", "NUCLEO_F429ZI"],
-        "toolchains" : [],
-        "exporters": [],
-        "compile" : true,
-        "export": true,
-        "test" : false,
-        "auto-update" : true
-    },
     {
         "name": "mbed-os-example-mbed-crypto",
         "github":"https://github.com/ARMmbed/mbed-os-example-mbed-crypto",