Build & config: Remove leftover files from the unsupported "make" build system

* Original commit: espressif/esp-idf@766aa57084

components/esp_websocket_client/component.mk

@@ -1,4 +0,0 @@
-ifdef CONFIG_WS_TRANSPORT
-COMPONENT_SRCDIRS := .
-COMPONENT_ADD_INCLUDEDIRS := include
-endif

components/esp_websocket_client/test/component.mk

@@ -1,4 +0,0 @@
-#
-#Component Makefile
-#
-COMPONENT_ADD_LDFLAGS = -Wl,--whole-archive -l$(COMPONENT_NAME) -Wl,--no-whole-archive