Remove unnecessary library from linking

Fixes: https://github.com/espressif/arduino-esp32/issues/866

platform.txt

@@ -35,7 +35,7 @@ compiler.S.flags=-c -g3 -x assembler-with-cpp -MMD -mlongcalls
 
 compiler.c.elf.cmd=xtensa-esp32-elf-gcc
 compiler.c.elf.flags=-nostdlib "-L{compiler.sdk.path}/lib" "-L{compiler.sdk.path}/ld" -T esp32_out.ld -T esp32.common.ld -T esp32.rom.ld -T esp32.peripherals.ld -T esp32.rom.spiram_incompatible_fns.ld -u ld_include_panic_highint_hdl -u call_user_start_cpu0 -Wl,--gc-sections -Wl,-static -Wl,--undefined=uxTopUsedPriority  -u __cxa_guard_dummy
-compiler.c.elf.libs=-lgcc -lopenssl -lbtdm_app -lfatfs -lwps -lcoexist -lidf_test -lwear_levelling -lhal -lnewlib -ldriver -lbootloader_support -lpp -lsmartconfig -ljsmn -lwpa -lethernet -lphy -lapp_trace -lconsole -lulp -lwpa_supplicant -lfreertos -lbt -lmicro-ecc -lcxx -lxtensa-debug-module -lmdns -lvfs -lsoc -lcore -lsdmmc -lcoap -ltcpip_adapter -lc_nano -lrtc -lspi_flash -lwpa2 -lesp32 -lapp_update -lnghttp -lspiffs -lespnow -lnvs_flash -lesp_adc_cal -llog -lexpat -lm -lc -lheap -lmbedtls -llwip -lnet80211 -lpthread -ljson  -lstdc++
+compiler.c.elf.libs=-lgcc -lopenssl -lbtdm_app -lfatfs -lwps -lcoexist -lwear_levelling -lhal -lnewlib -ldriver -lbootloader_support -lpp -lsmartconfig -ljsmn -lwpa -lethernet -lphy -lapp_trace -lconsole -lulp -lwpa_supplicant -lfreertos -lbt -lmicro-ecc -lcxx -lxtensa-debug-module -lmdns -lvfs -lsoc -lcore -lsdmmc -lcoap -ltcpip_adapter -lc_nano -lrtc -lspi_flash -lwpa2 -lesp32 -lapp_update -lnghttp -lspiffs -lespnow -lnvs_flash -lesp_adc_cal -llog -lexpat -lm -lc -lheap -lmbedtls -llwip -lnet80211 -lpthread -ljson  -lstdc++
 
 compiler.as.cmd=xtensa-esp32-elf-as
 

tools/platformio-build.py

@@ -94,7 +94,7 @@ env.Prepend(
         join(FRAMEWORK_DIR, "tools", "sdk", "ld")
     ],
     LIBS=[
-        "gcc", "openssl", "btdm_app", "fatfs", "wps", "coexist", "idf_test", "wear_levelling", "hal", "newlib", "driver", "bootloader_support", "pp", "smartconfig", "jsmn", "wpa", "ethernet", "phy", "app_trace", "console", "ulp", "wpa_supplicant", "freertos", "bt", "micro-ecc", "cxx", "xtensa-debug-module", "mdns", "vfs", "soc", "core", "sdmmc", "coap", "tcpip_adapter", "c_nano", "rtc", "spi_flash", "wpa2", "esp32", "app_update", "nghttp", "spiffs", "espnow", "nvs_flash", "esp_adc_cal", "log", "expat", "m", "c", "heap", "mbedtls", "lwip", "net80211", "pthread", "json", "stdc++"
+        "gcc", "openssl", "btdm_app", "fatfs", "wps", "coexist", "wear_levelling", "hal", "newlib", "driver", "bootloader_support", "pp", "smartconfig", "jsmn", "wpa", "ethernet", "phy", "app_trace", "console", "ulp", "wpa_supplicant", "freertos", "bt", "micro-ecc", "cxx", "xtensa-debug-module", "mdns", "vfs", "soc", "core", "sdmmc", "coap", "tcpip_adapter", "c_nano", "rtc", "spi_flash", "wpa2", "esp32", "app_update", "nghttp", "spiffs", "espnow", "nvs_flash", "esp_adc_cal", "log", "expat", "m", "c", "heap", "mbedtls", "lwip", "net80211", "pthread", "json", "stdc++"
     ],
 
     UPLOADERFLAGS=[

tools/sdk/lib/libidf_test.a

-!<arch>