GH-46219: [C++][Parquet] Remove PARQUET_MINIMAL_DEPENDENCY option (#46274)

### Rationale for this change

This option has been in our code base for some time but is not tested and may no longer work. The consensus in #46219 was to remove it.

### What changes are included in this PR?

The option is removed!

### Are these changes tested?

Yes (covered by the Parquet builds that had previously not tested this option!)

### Are there any user-facing changes?

Yes, a build option was removed; however, I wasn't able to find where this build option was documented in the first place!

* GitHub Issue: #46219

Authored-by: Dewey Dunnington <[email protected]>
Signed-off-by: Dewey Dunnington <[email protected]>

Author: paleolimbot

cpp/cmake_modules/DefineOptions.cmake

@@ -601,10 +601,6 @@ takes precedence over ccache if a storage backend is configured" ON)
   #----------------------------------------------------------------------
   set_option_category("Parquet")
 
-  define_option(PARQUET_MINIMAL_DEPENDENCY
-                "Depend only on Thirdparty headers to build libparquet.;\
-Always OFF if building binaries" OFF)
-
   define_option(PARQUET_BUILD_EXECUTABLES
                 "Build the Parquet executable CLI tools. Requires static libraries to be built."
                 OFF)

cpp/src/parquet/CMakeLists.txt

@@ -258,24 +258,23 @@ else()
   set(PARQUET_SRCS ${PARQUET_SRCS} encryption/encryption_internal_nossl.cc)
 endif()
 
-if(NOT PARQUET_MINIMAL_DEPENDENCY)
-  list(APPEND PARQUET_SHARED_LINK_LIBS arrow_shared)
-
-  # Add RapidJSON libraries
-  list(APPEND PARQUET_SHARED_PRIVATE_LINK_LIBS RapidJSON)
-  list(APPEND PARQUET_STATIC_LINK_LIBS RapidJSON)
-
-  # These are libraries that we will link privately with parquet_shared (as they
-  # do not need to be linked transitively by other linkers)
-  list(APPEND PARQUET_SHARED_PRIVATE_LINK_LIBS thrift::thrift)
-
-  # Link publicly with parquet_static (because internal users need to
-  # transitively link all dependencies)
-  list(APPEND PARQUET_STATIC_LINK_LIBS thrift::thrift)
-  if(NOT THRIFT_VENDORED)
-    list(APPEND PARQUET_STATIC_INSTALL_INTERFACE_LIBS thrift::thrift)
-  endif()
+list(APPEND PARQUET_SHARED_LINK_LIBS arrow_shared)
+
+# Add RapidJSON libraries
+list(APPEND PARQUET_SHARED_PRIVATE_LINK_LIBS RapidJSON)
+list(APPEND PARQUET_STATIC_LINK_LIBS RapidJSON)
+
+# These are libraries that we will link privately with parquet_shared (as they
+# do not need to be linked transitively by other linkers)
+list(APPEND PARQUET_SHARED_PRIVATE_LINK_LIBS thrift::thrift)
+
+# Link publicly with parquet_static (because internal users need to
+# transitively link all dependencies)
+list(APPEND PARQUET_STATIC_LINK_LIBS thrift::thrift)
+if(NOT THRIFT_VENDORED)
+  list(APPEND PARQUET_STATIC_INSTALL_INTERFACE_LIBS thrift::thrift)
 endif()
+
 if(ARROW_WITH_OPENTELEMETRY)
   list(APPEND PARQUET_SHARED_PRIVATE_LINK_LIBS ${ARROW_OPENTELEMETRY_LIBS})
 endif()