[rebase] remove LinalgOdsGen dependency from lib/Frontend/CMakeLists.txt

This was added in fir-dev in this commit:
9979896

After the rebased, this caused the following error in out-of-tree builds:

"CMake Error at build/lib/cmake/llvm/AddLLVM.cmake:680 (add_dependencies):
  The dependency target "LinalgOdsGen" of target "flangFrontend" does not
  exist."

Removing it removes the error, and in and out of tree builds pass with and
without shared libraries.

Author: jeanPerier

flang/lib/Frontend/CMakeLists.txt

@@ -12,7 +12,6 @@ add_flang_library(flangFrontend
 
   DEPENDS
   clangBasic
-  LinalgOdsGen
 
   LINK_LIBS
   FortranParser