Revert "esp_event test: Disable linker relaxations in this component, to temporarily workaround a linker bug"

This reverts commit 4eb9cc68a6136b84cac4fe68a5aadfcb936bcae8.

Alternative fix to be applied in next commit.

components/esp_event/test/CMakeLists.txt

@@ -1,8 +1,3 @@
 idf_component_register(SRC_DIRS "."
                        PRIV_INCLUDE_DIRS . ../private_include
                        PRIV_REQUIRES cmock test_utils esp_event driver)
-
-if(CONFIG_IDF_TARGET_ARCH_RISCV)
-    # Temporary workaround for a linker issue on RISC-V that should be resolved in binutils 2.35 (internal ref: GCC-101)
-    target_compile_options(${COMPONENT_LIB} PRIVATE -mno-relax)
-endif()