Revert "Fixing #291 where a different import with the same name as the package would not get included in the mock"

[LandonTClipp]

Reverts #297

This is causing an issue when generating mocks:

# github.com/vektra/mockery/v2/mocks/pkg/fixtures/buildtag/comment

mocks/pkg/fixtures/buildtag/comment/IfaceWithBuildTagInComment.go:7:2: imported and not used: "github.com/vektra/mockery/v2/pkg/fixtures/buildtag/comment"

package mocks

import (
	mock "github.com/stretchr/testify/mock"
	comment "github.com/vektra/mockery/v2/pkg/fixtures/buildtag/comment"
)

The fact that this passed CI means that we need to revisit it. I'm thinking that CI should, as part of perhaps a larger integration test, have mockery actually build the mocks and then run the test suite. This will catch errors like this. Although, I could have sworn that checks for validity were already done in the unit tests? I'm not sure.