Remove unused PROGRAM_SCHEMA_SRCS from build_variables.bzl (#13432)

Author: swolchok

shim_et/xplat/executorch/build/build_variables.bzl

@@ -290,11 +290,6 @@ QUANTIZED_KERNELS_SRCS = [
     "kernels/quantized/cpu/op_quantize.cpp",
 ]
 
-PROGRAM_SCHEMA_SRCS = [
-    "schema/program.fbs",
-    "schema/scalar_type.fbs",
-]
-
 OPTIMIZED_CPUBLAS_SRCS = [
     "kernels/optimized/blas/BlasKernel.cpp",
     "kernels/optimized/blas/CPUBlas.cpp",

tools/cmake/Codegen.cmake

@@ -386,7 +386,6 @@ function(executorch_load_build_variables)
       KERNELS_UTIL_ALL_DEPS_SRCS
       OPTIMIZED_KERNELS_SRCS
       QUANTIZED_KERNELS_SRCS
-      PROGRAM_SCHEMA_SRCS
       OPTIMIZED_CPUBLAS_SRCS
       OPTIMIZED_NATIVE_CPU_OPS_SRCS
       TEST_BACKEND_COMPILER_LIB_SRCS
@@ -419,7 +418,6 @@ function(executorch_load_build_variables)
       _kernels_util_all_deps__srcs
       _optimized_kernels__srcs
       _quantized_kernels__srcs
-      _program_schema__srcs
       _optimized_cpublas__srcs
       _optimized_native_cpu_ops__srcs
       _test_backend_compiler_lib__srcs